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remove cinit source - archives are available

Browse source 
Signed-off-by: Nico Schottelius <nico@brief.schottelius.org>
This commit is contained in:
Nico Schottelius 2012-11-15 15:11:00 +01:00
commit b8b6c0fecc
17791 changed files with 0 additions and 776233 deletions
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4
software/cinit/browse_source/cinit-0.0.4/BUGS
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To be done before 0.1 (dirty release):
- replace cerr-strings with #defines, so doubled strings are elimenated
- remove all printf()s, as they are debug only
- perhaps remove MAX_DEPS?

340
software/cinit/browse_source/cinit-0.0.4/COPYING
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@ -1,340 +0,0 @@
GNU GENERAL PUBLIC LICENSE
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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This program is free software; you can redistribute it and/or modify
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Also add information on how to contact you by electronic and paper mail.
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The hypothetical commands `show w' and `show c' should show the appropriate
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You should also get your employer (if you work as a programmer) or your
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
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This General Public License does not permit incorporating your program into
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Public License instead of this License.

14
software/cinit/browse_source/cinit-0.0.4/CREDITS
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@ -1,14 +0,0 @@
--------------------------------------------------------------------------------
Credits - People contributed to cinit
Nico Schottelius, 2005-05-17
--------------------------------------------------------------------------------
The following list is sorted chronological, new contributors are
added at the end of the list.
René Nussbaumer
* helping with the general IPC idea
* testing and proof-reading code
Marcus Przyklink
* coding linear lists, making MAX_SVC obsolete

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software/cinit/browse_source/cinit-0.0.4/Changelog
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@ -1,8 +0,0 @@
Sun May 8 12:20:35 CEST 2005
*Changelog can now be found in monotone database (monotone log)
Sat Apr 30 15:53:53 CEST 2005
* add socket code
Tue Apr 26 15:29:53 CEST 2005
* removed is_cinit support, initial messaging framework
Mon Apr 18 14:07:50 CEST 2005
* added is_cinit -> recognize if you are cinit or a fork

213
software/cinit/browse_source/cinit-0.0.4/MT/debug
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@ -1,213 +0,0 @@
started up on Linux 2.6.11.10 #2 Tue May 17 11:58:45 CEST 2005 ppc
command line: 'monotone-0.18', 'rename', 'conf/c_shd', 'conf/c_halt'
set locale: LC_CTYPE=C, LC_MESSAGES=C
initial path is /home/user/nico/cinit-0.0.4
converting 13 bytes from ANSI_X3.4-1968 to UTF-8
converting 6 bytes from ANSI_X3.4-1968 to UTF-8
converting 10 bytes from ANSI_X3.4-1968 to UTF-8
converting 11 bytes from ANSI_X3.4-1968 to UTF-8
searching for 'MT' directory with root '/'
search for 'MT' ended at '/home/user/nico/cinit-0.0.4' with '' removed
initializing from directory /home/user/nico/cinit-0.0.4
found working copy directory /home/user/nico/cinit-0.0.4
options path is MT/options
converting 2 bytes from UTF-8 to ANSI_X3.4-1968
converting 7 bytes from UTF-8 to ANSI_X3.4-1968
converting 2 bytes from UTF-8 to ANSI_X3.4-1968
converting 7 bytes from UTF-8 to ANSI_X3.4-1968
local dump path is MT/debug
setting dump path to MT/debug
opening rcfile '/home/user/nico/.monotonerc' ...
'/home/user/nico/.monotonerc' is ok
skipping nonexistent rcfile 'MT/monotonerc'
executing rename command
options path is MT/options
converting 2 bytes from UTF-8 to ANSI_X3.4-1968
converting 7 bytes from UTF-8 to ANSI_X3.4-1968
revision path is MT/revision
converting 2 bytes from UTF-8 to ANSI_X3.4-1968
converting 8 bytes from UTF-8 to ANSI_X3.4-1968
loading revision id from MT/revision
converting 2 bytes from UTF-8 to ANSI_X3.4-1968
converting 8 bytes from UTF-8 to ANSI_X3.4-1968
db.fetch("SELECT id FROM 'revisions' WHERE id = '1f5c45fa438bfd4f2c0f851e985d51e983cffaaa'")
db.fetch("SELECT data FROM revisions WHERE id = '1f5c45fa438bfd4f2c0f851e985d51e983cffaaa'")
old manifest is c6e5abc9fa52a464b3984cae46232bfd43feaabd
db.fetch("SELECT id FROM 'manifest_deltas' WHERE id = 'c6e5abc9fa52a464b3984cae46232bfd43feaabd'")
db.fetch("SELECT id FROM 'manifests' WHERE id = 'c6e5abc9fa52a464b3984cae46232bfd43feaabd'")
db.fetch("SELECT id FROM 'manifests' WHERE id = 'c6e5abc9fa52a464b3984cae46232bfd43feaabd'")
db.fetch("SELECT data FROM 'manifests' WHERE id = 'c6e5abc9fa52a464b3984cae46232bfd43feaabd'")
old manifest has 139 entries
work path is MT/work
converting 2 bytes from UTF-8 to ANSI_X3.4-1968
converting 4 bytes from UTF-8 to ANSI_X3.4-1968
checking for un-committed work file MT/work
converting 2 bytes from UTF-8 to ANSI_X3.4-1968
converting 4 bytes from UTF-8 to ANSI_X3.4-1968
read rearrangement from MT/work
'conf/c_shd' prefixed to 'conf/c_shd'
'conf/c_halt' prefixed to 'conf/c_halt'
analyzing file 1 : '' -> 'BUGS'
analyzing file 2 : '' -> 'CREDITS'
analyzing file 3 : '' -> 'Changelog'
analyzing file 4 : '' -> 'Makefile'
analyzing file 5 : '' -> 'README'
analyzing file 6 : '' -> 'TODO'
analyzing file 8 : '' -> 'bin/cinit.add.dependency'
analyzing file 9 : '' -> 'bin/cinit.add.getty'
analyzing file 10 : '' -> 'bin/cinit.create.cinit_dir'
analyzing file 11 : '' -> 'bin/cinit.create.empty.service'
analyzing file 12 : '' -> 'bin/cinit.do.not.respawn.service'
analyzing file 13 : '' -> 'bin/cinit.mkheader'
analyzing file 14 : '' -> 'bin/cinit.remove.getty'
analyzing file 15 : '' -> 'bin/cinit.respawn.service'
analyzing file 16 : '' -> 'bin/cinit.shutdown'
analyzing file 17 : '' -> 'bin/cinit.read-conf'
analyzing file 18 : '' -> 'cinit.h'
analyzing file 20 : '' -> 'client/begin_msg.c'
analyzing file 21 : '' -> 'client/connect_sock.c'
analyzing file 22 : '' -> 'client/exec_svc.c'
analyzing file 23 : '' -> 'client/kill_svc.c'
analyzing file 24 : '' -> 'client/msg_change_status.c'
analyzing file 25 : '' -> 'client/msg_start_svc.c'
analyzing file 26 : '' -> 'client/respawn_svc.c'
analyzing file 27 : '' -> 'client/run_run_svc.c'
analyzing file 28 : '' -> 'client/run_svc.c'
analyzing file 30 : '' -> 'comm/do_change_status.c'
analyzing file 31 : '' -> 'comm/do_result.c'
analyzing file 32 : '' -> 'comm/do_start_svc.c'
analyzing file 34 : '' -> 'conf/c_env'
analyzing file 35 : '' -> 'conf/c_init'
analyzing file 36 : '' -> 'conf/c_needs'
analyzing file 37 : '' -> 'conf/c_off'
analyzing file 38 : '' -> 'conf/c_on'
analyzing file 39 : '' -> 'conf/c_params'
analyzing file 40 : '' -> 'conf/c_reboot'
analyzing file 41 : '' -> 'conf/c_respawn'
analyzing file 42 : '' -> 'conf/c_shd'
analyzing file 43 : '' -> 'conf/c_sock'
analyzing file 44 : '' -> 'conf/c_tmp'
analyzing file 45 : '' -> 'conf/c_tmpfs'
analyzing file 46 : '' -> 'conf/c_tmpmount'
analyzing file 47 : '' -> 'conf/c_wants'
analyzing file 48 : '' -> 'conf/cinit_dir'
analyzing file 49 : '' -> 'conf/destdir'
analyzing file 50 : '' -> 'conf/getty_dir'
analyzing file 51 : '' -> 'conf/sleep_svc'
analyzing file 52 : '' -> 'conf/sock_group'
analyzing file 53 : '' -> 'conf/sock_mode'
analyzing file 54 : '' -> 'conf/sock_queue'
analyzing file 55 : '' -> 'conf/sock_user'
skipping preserved file 57 : ''
analyzing file 58 : '' -> 'doc/caveats'
analyzing file 59 : '' -> 'doc/cinit.commands'
analyzing file 61 : '' -> 'doc/fun/testing01'
analyzing file 62 : '' -> 'doc/how_it_works_internally'
analyzing file 63 : '' -> 'doc/ipc.thoughts'
analyzing file 64 : '' -> 'doc/ipc.usenet.posting'
analyzing file 65 : '' -> 'doc/posix.aardvark.bug.report'
analyzing file 66 : '' -> 'doc/shutting.down'
analyzing file 67 : '' -> 'doc/thoughts.closed'
analyzing file 68 : '' -> 'doc/thoughts.open'
analyzing file 70 : '' -> 'generic/mini_printf.c'
analyzing file 71 : '' -> 'generic/set_signals.c'
analyzing file 73 : '' -> 'old/cerr.c'
analyzing file 74 : '' -> 'old/cinit.c01'
analyzing file 75 : '' -> 'old/cinit.c02'
analyzing file 76 : '' -> 'old/cinit.c03'
analyzing file 77 : '' -> 'old/cinit.c04'
analyzing file 78 : '' -> 'old/cinit.c05'
analyzing file 79 : '' -> 'old/cinit.c06'
analyzing file 80 : '' -> 'old/cinit.commands.v01'
analyzing file 81 : '' -> 'old/cinit.h01'
analyzing file 82 : '' -> 'old/cnt_digits.c'
analyzing file 83 : '' -> 'old/do_change_status.c01'
analyzing file 84 : '' -> 'old/idea01'
analyzing file 85 : '' -> 'old/idea02'
analyzing file 86 : '' -> 'old/msg_change_status.c01'
analyzing file 87 : '' -> 'old/msg_start_svc.c'
analyzing file 88 : '' -> 'old/run_init_svc.c01'
analyzing file 89 : '' -> 'old/run_svc.c00'
analyzing file 90 : '' -> 'old/run_svc.c01'
analyzing file 91 : '' -> 'old/run_svc.c02'
analyzing file 92 : '' -> 'old/run_svc.c03'
analyzing file 93 : '' -> 'old/run_svc.c04'
analyzing file 94 : '' -> 'old/run_svc.c05'
analyzing file 95 : '' -> 'old/run_svc.c05.2'
analyzing file 96 : '' -> 'old/run_svc.c06'
analyzing file 97 : '' -> 'old/run_svc.c07'
analyzing file 98 : '' -> 'old/run_svc.c08'
analyzing file 99 : '' -> 'old/run_svc.c09'
analyzing file 100 : '' -> 'old/sig_chld.c'
analyzing file 101 : '' -> 'old/sigio.c01'
analyzing file 103 : '' -> 'sbin/cinit'
analyzing file 105 : '' -> 'serv/add_mod_svc.c'
analyzing file 106 : '' -> 'serv/chk_svc.c'
analyzing file 107 : '' -> 'serv/cinit.c'
analyzing file 108 : '' -> 'serv/list.c'
analyzing file 109 : '' -> 'serv/panic.c'
analyzing file 110 : '' -> 'serv/run_init_svc.c'
analyzing file 111 : '' -> 'serv/sig_reboot.c'
analyzing file 112 : '' -> 'serv/sigio.c'
analyzing file 114 : '' -> 'size/2005-04-26-14:54:44'
analyzing file 115 : '' -> 'size/2005-04-26-16:47:50'
analyzing file 116 : '' -> 'size/2005-04-26-16:48:48'
analyzing file 117 : '' -> 'size/2005-04-26-16:50:45'
analyzing file 118 : '' -> 'size/2005-04-26-17:12:48'
analyzing file 119 : '' -> 'size/2005-04-26-17:13:43'
analyzing file 120 : '' -> 'size/2005-04-26-23:05:33'
analyzing file 121 : '' -> 'size/2005-04-27-00:39:24'
analyzing file 122 : '' -> 'size/2005-04-30-15:18:22'
analyzing file 123 : '' -> 'size/2005-04-30-15:20:40'
analyzing file 124 : '' -> 'size/2005-04-30-15:23:25'
analyzing file 125 : '' -> 'size/2005-04-30-15:25:44'
analyzing file 126 : '' -> 'size/2005-04-30-15:32:43'
analyzing file 127 : '' -> 'size/2005-04-30-15:33:37'
analyzing file 128 : '' -> 'size/2005-04-30-15:41:08'
analyzing file 129 : '' -> 'size/2005-04-30-15:41:18'
analyzing file 130 : '' -> 'size/2005-04-30-15:46:09'
analyzing file 131 : '' -> 'size/2005-04-30-16:48:16'
analyzing file 132 : '' -> 'size/2005-04-30-16:50:05'
analyzing file 133 : '' -> 'size/2005-04-30-17:02:27'
analyzing file 134 : '' -> 'size/2005-04-30-17:03:00'
analyzing file 135 : '' -> 'size/2005-04-30-17:05:11'
analyzing file 136 : '' -> 'size/2005-04-30-17:06:15'
analyzing file 137 : '' -> 'size/2005-04-30-17:11:59'
analyzing file 138 : '' -> 'size/2005-04-30-17:13:43'
analyzing file 139 : '' -> 'size/2005-04-30-22:28:13'
analyzing file 140 : '' -> 'size/2005-04-30-22:34:23'
analyzing file 141 : '' -> 'size/2005-05-02-13:27:51'
analyzing file 142 : '' -> 'size/2005-05-02-13:46:31'
analyzing file 143 : '' -> 'size/2005-05-02-13:49:29'
analyzing file 144 : '' -> 'size/2005-05-02-13:49:58'
analyzing file 145 : '' -> 'size/2005-05-02-13:52:20'
analyzing file 146 : '' -> 'size/2005-05-02-13:55:50'
analyzing file 147 : '' -> 'size/2005-05-02-13:58:14'
analyzing file 148 : '' -> 'size/2005-05-02-13:59:53'
analyzing file 149 : '' -> 'size/2005-05-02-14:00:26'
analyzing file 150 : '' -> 'size/2005-05-02-14:04:19'
skipping preserved directory 151 : 'bin'
skipping preserved directory 152 : 'client'
skipping preserved directory 153 : 'comm'
skipping preserved directory 154 : 'conf'
skipping preserved directory 155 : 'doc'
skipping preserved directory 156 : 'doc/fun'
skipping preserved directory 157 : 'generic'
skipping preserved directory 158 : 'old'
skipping preserved directory 159 : 'sbin'
skipping preserved directory 160 : 'serv'
skipping preserved directory 161 : 'size'
analyzing file 168 : '' -> 'bin/cinit.add.shutdown.reboot.poweroff'
analyzing file 169 : '' -> 'bin/cinit.get-confdir'
analyzing file 171 : '' -> 'bin/not-working/cinit.create.service'
analyzing file 173 : '' -> 'conf/.README'
analyzing file 174 : '' -> 'conf/c_halt'
analyzing file 175 : '' -> 'conf/c_poweroff'
analyzing file 176 : '' -> 'conf/sleep_kill'
analyzing file 178 : '' -> 'doc/.buildwarn'
analyzing file 179 : '' -> 'doc/meta.dependencies'
skipping preserved directory 180 : 'bin/not-working'
adding conf/c_shd -> conf/c_halt to working copy rename set
skipping preserved directory 1 : 'conf'
analyzing file 2 : 'conf/c_shd' -> 'conf/c_halt'
change_set.cc:565: invariant 'I(entries.find(p) == entries.end())' violated

0
software/cinit/browse_source/cinit-0.0.4/MT/log
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branch "info.clinux.cinit"
database "/home/user/nico/monotone.db"
key ""

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81778a4d16c2b27a8e686600dde41795fc5ed6b8

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#
# cinit
# Nico Schottelius
#
# Don't edit Makefile, use conf/*.
#
#
# compile/link options
#
# do not use DEBUG and OPTIMIZE at the same time!
#DEBUG=-g -DDEBUG
OPTIMIZE=-Os
LDFLAGS=-static # init should be static per default!
# programs
CC=gcc $(DEBUG) $(OPTIMIZE)
CFLAGS=-pipe -Wall -I.
LD=gcc
STRIP=strip
# monotone
MT=monotone-0.18
# directories and files
DIRS=client bin conf comm generic doc sbin serv
FILES=BUGS Changelog Makefile README TODO cinit.h
# objects
SERV=serv/sigio.o serv/cinit.o serv/list.o \
serv/run_init_svc.o serv/panic.o serv/sig_reboot.o
CLIENT=client/msg_start_svc.o client/msg_change_status.o client/run_svc.o \
client/exec_svc.o client/respawn_svc.o client/run_run_svc.o \
client/connect_sock.o client/begin_msg.o
COMMUNICATION=comm/do_change_status.o comm/do_result.o comm/do_start_svc.o
BOTH=generic/set_signals.o generic/mini_printf.o
OBJ=$(SERV) $(CLIENT) $(BOTH) $(COMMUNICATION)
# DO NOT CHANGE THIS.
SBIN=sbin
CINIT_BIN=$(SBIN)/cinit
# targets
warn:
@cat doc/.buildwarn
all: $(CINIT_BIN) sizecheck
$(CINIT_BIN): $(SBIN) config.h $(OBJ)
$(LD) $(LDFLAGS) $(OBJ) -o $@
$(STRIP) $@
$(SBIN):
mkdir $(SBIN)
sizecheck:
FILE="size/`date +%Y-%m-%d-%T`"; ls -l sbin/cinit > $$FILE; cat $$FILE
clean:
rm -f *.o */*.o sbin/cinit config.h
config.h: conf/*
./bin/cinit.mkheader > config.h
mt-update:
$(MT) add $(DIRS) $(FILES) 2>/dev/null
mt-commit:
$(MT) commit
mt-sync:
$(MT) sync linux.schottelius.org info.clinux.cinit
install:
chmod 0700 ./scripts/install
./bin/cinit.install.binary
# rm /sbin/cinit
# cp sbin/cinit /sbin/cinit
install-conf:
@echo *** Creating very basic configuration. ***
./bin/cinit.install.conf
install-test:
@echo *** Copying testing configuration. ***
./bin/cinit.install.test

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--------------------------------------------------------------------------------
cinit, Nico Schottelius, 2005-04-28 [last change: 2005-05-07]
--------------------------------------------------------------------------------
Introduction
============
cinit is a fast init system with dependency features.
It is orientated on the design off Richard Gooch's
need [0] and Felix von Leitner's minit[1]. Minit does not support real
dependencies (you don't know whether the service you depend on really
started) and the need concept is somehow slow (as seen in gentoo).
In addition, minit needs libowfat and dietlibc, which may not be found
on every Unix system.
cinit main features:
- portability: it should run on every POSIX compatible system.
- true dependencies
- parallel execution
- highly customisable (see conf/*)
Getting cinit
=============
This README is part of the source, so you should have it.
If not, goto the homepage [2] and download the tar archive
or get the lastest snapshot via monotone.
Pre-Configuring
===============
If you want to fine tune cinit parameters, add different path names,
change the DESTDIR, ... have a look at conf/*.
Installing
==========
You can install cinit parallel to any other init-system, it won't
kill other init's config nor /sbin/init, if it exists.
You only have to tell your kernel to execute /sbin/cinit instead
of /sbin/init.
Everybody do:
# make all install
If it's the first time you operate with cinit, also do:
# make install-example
This will populate /etc/cinit with some default services for Linux
(mounting root r/w, starting gettys, setting hostname).
This should work on most Linux systems, still you should have a
look at /etc/cinit and see whether services are correct.
Configuring
===========
You'll have to configure /etc/cinit and add your existing services.
Please read doc/configuring.cinit for details.
sampleconfig.tar is the tar-ball I used for testing, beware if you use it:
It loads dvorak at startup!
There are currently no tools to merge your existing init-system
to cinit (like sysvinit-merge, bsd-merge or minit-merge) available.
If someone cares and tries to do that, I would be happy to include
the script(s).
Additionally I would be thankful for tar-balls containing a complete
replacement of $your_unix_init.
Author, Contact, Bug reports, etc.
==================================
Nico Schottelius (nico-linux-cinit<<at>>schottelius [[dot]] org) is the
author. Bug reports should be send to this address.
The homepage of cinit is [2].
References:
===========
[0]: need: http://www.atnf.csiro.au/people/rgooch/linux/boot-scripts/
[1]: minit: http://www.fefe.de/minit/
[2]: cinit: http://linux.schottelius.org/cinit.html

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- check return values of most functions!
- check errno!
- check whether headers are ok
- remove printfs!
- write manpages (use doc/* as base for that)
- eventually split cinit code to csvc to minimize binary of cinit?
- cleanup comments
- cleanup headers!
- respawn_svc and exec_svc must return pid_t of executed service / watcher
- exec_svc.c: should we also change environment?
- write install-example for non-Linux systems (think of merge also)
- move messages to cinit.h or message.h or conf/msg-*!
- remove MAX_SVC
- change exec_svc to be much more dumb!
*svc, *svc_param_file, *svc_env_file
- remove stat from exec_svc, do before!
- check for possibilies to save ram, free things
- stat() in run_svc -> don't call exec_svc, respawn_svc, run_run_svc
- close(*>2) before forking / executing
- get CTR-ALT-DEL
- check if we caught every signal, which could kill us
- create coala-socket with correct permissions! (550, root:cinit)
- run_svc_new:
o we have many strcat()s, perhaps save length of pathbuf and strncat at
pathtmp[strlen(pathbuf)] ?
o should we check strcat and strcpy return values or do we expect them to work?
--------------------------------------------------------------------------------
- script merge sysVinit to cinit?
- circulaere abhaengigkeiten?
- script vorher?
--------------------------------------------------------------------------------
- create conversion table:
djbdns <-> name_server
dnscache <-> name_caching
qmail,postfix,... <-> MTA
--------------------------------------------------------------------------------
create_mini_cinit
-> create something which should be runnable
-> mount, fsck, getty
--> for dev in `read /etc/fstab` ...
fsck $dev
--> mount -a
--> mount -n -o remount,rw /
--> getty from /etc/inittab or /sbin/*getty
-> find out, which gettys with which params
-> use it on 'make install'
--------------------------------------------------------------------------------
signal handlers:
sa.sa_handler=sigint; sigaction(SIGINT,&sa,0); /* ctrl-alt-del */
sa.sa_handler=sigwinch; sigaction(SIGWINCH,&sa,0); /* keyboard request */
--------------------------------------------------------------------------------
Add support for 'cinit' group, which may shutdown/reboot/halt with
SO_PASSCRED in sockets
--------------------------------------------------------------------------------
Done
- include '/' in C_RUNS? make double strings? -> no.

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#!/bin/sh
# Nico Schottelius
# cinit: create dependency: service a needs or wants service b
set -e
# init variables
. $(dirname $0)/cinit.read-conf
BASEDIR=$DESTDIR/$CINIT_DIR
if [ $# -ne 3 ]; then
echo "`basename $0`: service_A [wants|needs] service_B"
echo ""
echo " Service A needs or needs Service B."
echo " Use relative paths, not absolute."
echo " You must specify whether to use wants or needs."
echo ""
exit 23
fi
SVC_A=$1
DEP=$2
SVC_B=$3
case $DEP in
wants) DEP=$C_WANTS ;;
needs) DEP=$C_NEEDS ;;
*) echo "Did not I say \"want\" or \"need\"? You _must_ use those terms."
esac
# FIXME: could some PLEASE simply that?
SLASHES=$(echo $SVC_A | sed -e 's,/$,,' -e 's,[^/],,g' -e 's,/,../,g' -e 's,^,../../,')
DEST_NAME=$(echo $SVC_B | sed -e 's,/$,,' -e 's,/,-,g')
SOURCE="${SLASHES}${SVC_B}"
DEST="${BASEDIR}/${SVC_A}/${DEP}/${DEST_NAME}"
echo -n "Linking $SOURCE to $DEST ... "
ln -sf "$SOURCE" "$DEST"
echo "finished."

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#!/bin/sh
# Nico Schottelius
# cinit: create gettys
# 2005-05-24
set -e
# init variables
. $(dirname $0)/cinit.read-conf
BASEDIR=$DESTDIR/$CINIT_DIR/$GETTY_DIR
LAST_NUMBER=$(cd $BASEDIR && echo * | sed 's/.* //')
NUMBER=$(echo $LAST_NUMBER + 1 | bc)
[ ! "$NUMBER" ] && NUMBER=1
DDIR=$BASEDIR/$NUMBER
echo "Creating getty number $NUMBER in $DDIR ..."
if [ "$USE_THIS_GETTY" ]; then
GETTYS="$USE_THIS_GETTY"
else
GETTYS=`echo /sbin/*getty*`
fi
for getty in $GETTYS; do
case $getty in
*/fgetty|*/mingetty)
mygetty=$getty
params="/dev/tty${NUMBER}"
;;
*/agetty|*/getty)
mygetty=$getty
params="38400 tty${NUMBER} linux"
;;
*)
echo "Unknown Getty type $getty"
echo "Please report standard parameters to me."
esac
[ "$mygetty" ] && break
done
if [ ! "$mygetty" ]; then
echo "No useable getty found, existing."
exit 1
fi
echo -n "Using $mygetty $params ... "
mkdir -p "$DDIR"
ln -s $mygetty "$DDIR/$C_ON"
for param in $params; do
echo $param >> "$DDIR/${C_ON}${C_PARAMS}"
done
touch "$DDIR/$C_RESPAWN"
echo "finished."

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#!/bin/sh
# Nico Schottelius
# cinit: create templates
# 2005-05-24
set -e
# init variables
. $(dirname $0)/cinit.read-conf
if [ $# -lt 1 ]; then
echo "`basename $0`: service-name(s)"
echo " I do create templates for your services"
exit 1
fi
BASEDIR=$DESTDIR/$CINIT_DIR
BASEDIR=./testcinit
for svc in $@; do
INSTDIR=${BASEDIR}/${svc}
if [ -e "$INSTDIR" ]; then
echo "$svc already exists, skipping."
continue
fi
echo -n "Creating $svc ..."
# install creates needed parent directories
"$INSTALL_PROG" "$INSTALL_DIRECTORY" "${INSTDIR}/${C_NEEDS}"
echo "The services this services really needs (it will not start if one failed to start)." > "${INSTDIR}/${C_NEEDS}/README"
"$INSTALL_PROG" "$INSTALL_DIRECTORY" "${INSTDIR}/${C_WANTS}"
echo "The services this services wants (it will start if one or more fail)." > "${INSTDIR}/${C_WANTS}/README"
echo '#!/bin/sh' > "${INSTDIR}/${C_ON}"
echo "echo This should be a link to an executable or a script" >> "${INSTDIR}/${C_ON}"
chmod 0700 "${INSTDIR}/${C_ON}"
echo "One paramater on each line." > "${INSTDIR}/${C_ON}${C_PARAMS}"
echo "Delete me, if there are no paramaters." > "${INSTDIR}/${C_ON}${C_PARAMS}"
echo "Environtment: varx=valuex, one variable on each line." > "${INSTDIR}/${C_ON}${C_ENV}"
echo "Delete me, if you do not want to set any variables." > "${INSTDIR}/${C_ON}${C_ENV}"
echo "finished."
done

24
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#!/bin/sh
# Nico Schottelius
# cinit: switch respawning off
# 2005-05-24
set -e
# init variables
. $(dirname $0)/cinit.read-conf
if [ $# -lt 1 ]; then
echo "`basename $0`: service-name(s)"
echo " The respawning mark will be removed from services"
exit 1
fi
BASEDIR=$DESTDIR/$CINIT_DIR
for svc in $@; do
echo -n "Removing respawning mark from $svc ..."
rm -f "${BASEDIR}/${svc}/${C_RESPAWN}"
echo "finished."
done

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#!/bin/sh
# Nico Schottelius
# cinit: read configuration into variables
# 2005-05-24
# try environment first
if [ "$CINIT_DIR" ]; then
CONFDIR=$CINIT_DIR
elif [ -d $(dirname $0)/../conf/ ]; then
CONFDIR=$(dirname $0)/../conf/
elif [ -d /etc/cinit ]; then
CONFDIR=/etc/cinit
else
echo Did not find cinit configuration 1>&2
exit 1
fi
echo $CONFDIR

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#!/bin/sh
# Nico Schottelius
# cinit: install basic setup
#
. $(dirname $0)/cinit.read-conf
"$INSTALL_PROG" sbin/cinit $DESTDIR/$PREFIX/sbin/cinit
"$INSTALL_PROG" "$INSTALL_DIRECTORY" $DESTDIR/$PREFIX/$CINIT_DIR

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#!/bin/sh
# Nico Schottelius
# cinit: create header file
#
CONFS=$($(dirname $0)/cinit.get-confdir)/../conf/*
echo "/* Warning: Autogenerated by $0, do not edit. */"
for conf in $CONFS; do
NAME="$(basename $conf | tr a-z A-Z)"
value=$(head -n 1 $conf)
# check if numeric - no I didn't see an easier way
numeric=$(echo $value | awk '/^((0[xX])[0-9a-fA-F]+)|([0-9]+)$/ { print }')
[ "$numeric" ] || value="\"$value\""
echo "#define" "$NAME" "$value"
done

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#!/bin/sh
# Nico Schottelius
# cinit: read configuration into variables
#
CONFS=$($(dirname $0)/cinit.get-confdir)/../conf/*
for conf in $CONFS; do
NAME="$(basename $conf | tr a-z A-Z)"
eval $NAME="$(head -n 1 $conf)"
eval export $NAME
# eval echo $NAME = \$$NAME
done

22
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#!/bin/sh
# Nico Schottelius
# cinit: create gettys
# init variables
. $(dirname $0)/cinit.read-conf
BASEDIR=$DESTDIR/$CINIT_DIR/$GETTY_DIR
NUMBER=$(cd $BASEDIR; echo * | sed 's/.* //')
[ ! "$NUMBER" ] && exit 1
DDIR=$BASEDIR/$NUMBER
echo "Removing getty number $NUMBER located in $DDIR ..."
read -p "Are you sure [y/N]? " yes
if [ "$yes" = "y" ]; then
rm -r $DDIR
else
echo "Aborted."
fi

24
software/cinit/browse_source/cinit-0.0.4/bin/cinit.respawn.service
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@ -1,24 +0,0 @@
#!/bin/sh
# Nico Schottelius
# cinit: switch respawning on
# 2005-05-24
set -e
# init variables
. $(dirname $0)/cinit.read-conf
if [ $# -lt 1 ]; then
echo "`basename $0`: service-name(s)"
echo " Services will be marked respawning"
exit 1
fi
BASEDIR=$DESTDIR/$CINIT_DIR
for svc in $@; do
echo -n "Marking $svc respawning ..."
touch "${BASEDIR}/${svc}/${C_RESPAWN}"
echo "finished."
done

27
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#!/bin/sh
# Nico Schottelius
# shutdown system
# 2005-05-24
usage()
{
echo "`basename $0` -[ohr]"
echo " Shutdown the system:"
echo " -o|--off: Power off"
echo " -h|--halt: Halt"
echo " -r|--reboot: Reboot"
echo " "
exit 1
}
if [ $# -ne 1 ]; then
usage
fi
case $1 in
-r|--reboot) kill -HUP 1 ;;
-o|--off) kill -TERM 1 ;;
-h|--halt) kill -USR1 1 ;;
*) usage ;;
esac

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#!/bin/sh
# Nico Schottelius
# cinit: create templates
# 2005-05-24
set -e
# init variables
. $(dirname $0)/cinit.read-conf
if [ $# -lt 1 ]; then
echo "`basename $0`: service-name (including category)"
echo " I do create a service for you"
exit 1
fi
BASEDIR=$DESTDIR/$CINIT_DIR
# read input (from gentoo-bug.sh, http://linux.schottelius.org/scripts/#gentoo-bug
reread()
{
_tmp=""
name="$1"
while [ ! "$_tmp" ]; do
read -p "$1 [$_tmp]: " _tmp
done
echo $_tmp
}
for svc in $@; do
echo -n "Creating $svc ..."
mkdir -p "${BASEDIR}/${svc}"
cd ${BASEDIR}/${svc}
mkdir -p "${C_WANTS}" "${C_NEEDS}"
echo "finished."
done

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/*
* cinit
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* header of cinit
*/
/* includes */
#include <sys/types.h> /* pid_t */
#include "config.h" /* paths, socket options, etc. */
/* limits: will be obsolete in cinit-1.0 */
#define MAX_SVC 510 /* maximum services - defines size of array - may later be obsoleted */
#define MAX_DEPS 32 /* maximum direct dependencies of a service */
#define BUFSIZE 4096
/* paths */
#define C_ONARG C_ON C_PARAMS
#define C_OFFARG C_OFF C_PARAMS
#define C_ONENV C_ON C_ENV
#define C_OFFENV C_OFF C_ENV
#define SLASH "/"
#define CINIT_INIT CINIT_DIR SLASH C_INIT
#define CINIT_TMNT CINIT_DIR SLASH C_TMP
#define CINIT_SOCK CINIT_TMNT SLASH C_SOCK
/* commands (maximum: 2^8 = 256)*/
#define CMD_START_SVC 0
#define CMD_CHG_STATUS 1
#define CMD_STOP_SVC 2
#define CMD_KILL_SVC 3
#define CMD_RESCUE 251
#define CMD_INIT 252
#define CMD_HALT 253
#define CMD_REBOOT 254
#define CMD_POWEROFF 255
/* status of a service */
#define ST_TMP 1 /* currently working on it */
#define ST_ONCE 2 /* executed once */
#define ST_RESPAWN 3 /* running and respawning */
#define ST_FAIL 4 /* failed to start service */
/* actions for i/o handlers (see comm/do_*) */
#define ACT_SERV 0
#define ACT_CLIENT 1
/* Messages to the outside */
#define MSG_ERR_FORK "fork"
#define MSG_ERR_EXECVE "execve"
#define MSG_ERR_ALLOC "memory allocation"
#define MSG_ERR_UMOUNT "umount"
#define MSG_TERMKILL "sigterm"
#define MSG_KILLBILL "sigkill"
/* array of svc - not needed anymore
struct svc {
char *abs_path; * service identifier *
char status; * tmp, respawn, ran once *
pid_t pid; * pid of the process *
};
struct svcl {
struct svc svca[MAX_SVC];
int process;
};
*/
// extern struct svcl svc_list;
struct listitem {
char *abs_path;
int status;
pid_t pid;
struct listitem *before;
struct listitem *after;
};
/* variables */
extern struct listitem *list;
extern int sock, logfd;
/* functions (used by server and client) */
void cerr(char *string, int status);
int run_svc(char *rpath);
void mini_printf(char *str, int fd);
void set_signals(int action);
#define LOG(s) mini_printf(s,logfd)
int do_start_svc(int sock2, char *svc, int action);
int do_change_status(char *svc, char *status, pid_t *pid, int sock2, int action);
char do_result(int sock2, char *value);
/* server functions */
/* int chk_svc(char *svc);
int add_mod_svc(char *svc, char status, pid_t pid); */
int list_insert(char *path, int status);
struct listitem *list_search(char *path);
int list_delete(char *path);
int run_init_svc(void);
void sigio(int signal);
void sig_reboot(int signal);
void panic(void);
/* client / message functions */
int msg_start_svc(char *svc);
int msg_change_status(char *svc, char status, pid_t pid);
int begin_msg(char cmd);
/* client functions */
int run_run_svcs(char *abspath);
pid_t exec_svc(char *abspath, int on);
pid_t respawn_svc(char *abspath);
int connect_sock(int socke);
char **read_file(char *file);
/* DEBUG */
#ifdef DEBUG
# define D_PRINTF(x) ( printf("[%s:%d]: %s\n",__FILE__,__LINE__,x) )
#else
# define D_PRINTF(x) if(0)
#endif
/* Messages to the outside */

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client/
These sources are used by the children which are spawned by cinit.

24
software/cinit/browse_source/cinit-0.0.4/client/begin_msg.c
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@ -1,24 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* tell cinit that I want to start a service
* part of cinit
*/
#include <unistd.h>
#include <stdio.h>
#include "cinit.h"
int begin_msg(char cmd)
{
sock = connect_sock(sock);
if( sock == -1 ) {
return 0;
}
if(write(sock,&cmd,sizeof(cmd)) == -1) {
perror("i/o: command");
return 0;
}
return 1;
}

41
software/cinit/browse_source/cinit-0.0.4/client/connect_sock.c
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@ -1,41 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* run_svc
* part of cinit
*/
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include "cinit.h"
/* open socket connection to cinit-serv and close original socket */
int connect_sock(int socke)
{
int nsock;
struct sockaddr_un addr;
D_PRINTF("socket verbinden");
/******************* begin socket *********************/
close(socke);
nsock = socket(PF_UNIX,SOCK_STREAM,0);
if( nsock == -1 ) {
perror("socket");
return -1;
}
socke = sizeof(addr);
memset(&addr,0,socke);
strcpy(addr.sun_path, CINIT_SOCK);
addr.sun_family = AF_UNIX;
if(connect(nsock,(struct sockaddr *)&addr,socke) == -1) {
perror("connect");
return -1;
}
return nsock;
}

246
software/cinit/browse_source/cinit-0.0.4/client/exec_svc.c
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@ -1,246 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* run_svc
* part of cinit
*/
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "cinit.h"
/***********************************************************************
* exec_svc: exec service abspath C_ON or C_OFF
*/
pid_t exec_svc(char *abspath, int on)
{
pid_t pid;
int tmp;
char *p, pathtmp[PATH_MAX];
char *sbuf = NULL, **nargv = NULL, **nenv = NULL;
int fd, argc;
struct stat buf;
pid = fork();
if( pid == -1 ) {
perror("fork");
return 0;
}
/***** PARENT ******/
if(pid > 0) {
waitpid(pid,&tmp,0);
if( WIFEXITED(tmp) ) {
D_PRINTF("EXEC SVC ERFOLGREICH");
return pid;
} else {
D_PRINTF("EXEC SVC FEHLGESCHLAGEN");
return 0;
}
}
/*********** CHILD EXECUTION ***********/
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
if(on) {
strcat(pathtmp,C_ON);
} else {
strcat(pathtmp,C_OFF);
}
D_PRINTF(pathtmp);
/* readlink retrieves real name, if it is a symlink */
if ( (tmp = readlink(pathtmp,pathtmp,PATH_MAX) ) == -1) {
/* nothing there? fine, exit */
if(errno == ENOENT) {
_exit(0);
} else if (errno != EINVAL) {
perror("readlink");
_exit(1);
}
/* restore original name, file is not a link */
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
if(on) {
strcat(pathtmp,C_ON);
} else {
strcat(pathtmp,C_OFF);
}
tmp = strlen(pathtmp);
} else {
/* add '\0', readlink forgets it */
pathtmp[tmp] = '\0';
}
tmp++; /* add memory for \0 */
/********** build argv0 ********/
nargv = (char **) malloc( sizeof(char *) );
if(nargv == NULL) _exit(1);
*nargv = (char *) malloc( tmp );
if(*nargv == NULL) _exit(1);
strcpy(*nargv,pathtmp);
/********************** read params *********************/
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
if(on) {
strcat(pathtmp,C_ONARG);
} else {
strcat(pathtmp,C_OFFARG);
}
/* open params file */
if( !stat(pathtmp,&buf) ) {
fd = open(pathtmp,O_RDONLY);
if(fd == -1) {
perror("open");
_exit(1);
}
argc = 0;
/* most likely one round */
while ( (tmp = read(fd,pathtmp,PATH_MAX) ) != 0 ) {
if(tmp == -1) {
perror("read");
_exit(1);
}
sbuf = realloc(sbuf,argc + tmp + 1);
strncpy(&sbuf[argc],pathtmp,tmp);
argc += tmp;
}
close(fd);
if(argc)
sbuf[argc] = '\0'; /* terminate string */
} else {
sbuf = NULL;
}
/************** build string **************/
/* The idea is to reuse the allocated memory. We'll simply
* replace the \n with \0 and set a char* to it.
* We'll lose the last byte (the initial \0), but we
* don't care, as we die some seconds later with execv() */
argc = 1; /* argv0 */
while( sbuf != NULL) {
p = strchr(sbuf,'\n');
nargv = realloc(nargv, sizeof(char *) * (argc + 1));
if(nargv == NULL) {
LOG("realloc failed");
_exit(1);
}
nargv[argc] = sbuf;
*p = '\0';
if( *(p+1) == '\0') {
sbuf = NULL;
} else {
sbuf = p+1;
}
argc++;
}
/************ close argv list **************/
nargv = realloc(nargv, sizeof(char *) * (argc + 1)); /* 1: NULL-pointer */
if(nargv == NULL) {
LOG("realloc failed");
_exit(1);
}
nargv[argc] = NULL; /* terminate argv list */
/********************** read environment *********************/
strcpy(pathtmp,abspath);
strcat(pathtmp,SLASH);
if(on) {
strcat(pathtmp,C_ONENV);
} else {
strcat(pathtmp,C_OFFENV);
}
argc = 0;
sbuf = NULL;
if( !stat(pathtmp,&buf) ) {
fd = open(pathtmp,O_RDONLY);
/* if a file exists, failing to open it is an error */
if(fd == -1) {
perror("open");
_exit(1);
}
while ( (tmp = read(fd,pathtmp,PATH_MAX) ) != 0 ) {
if(tmp == -1) {
perror("read");
_exit(1);
}
sbuf = realloc(sbuf,argc + tmp + 1);
strncpy(&sbuf[argc],pathtmp,tmp);
argc += tmp;
}
close(fd);
if(argc)
sbuf[argc] = '\0'; /* terminate string */
}
/************** build environment string **************/
argc = 0;
while( sbuf != NULL ) {
p = strchr(sbuf,'\n');
nenv = realloc(nenv, sizeof(char *) * (argc + 1));
if(nenv == NULL) {
LOG("realloc failed");
_exit(1);
}
nenv[argc] = sbuf;
*p = '\0';
if( *(p+1) == '\0') {
sbuf = NULL;
} else {
sbuf = p+1;
}
argc++;
}
/************ close env list **************/
nenv = realloc(nenv, sizeof(char *) * (argc + 1));
if(nenv == NULL) {
LOG(MSG_ERR_ALLOC);
_exit(1);
}
nenv[argc] = NULL;
/****************** EXECUTE ********************/
execve(nargv[0],nargv,nenv);
/* we should never reach this block */
perror(MSG_ERR_EXECVE);
_exit(1);
}

104
software/cinit/browse_source/cinit-0.0.4/client/kill_svc.c
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@ -1,104 +0,0 @@
KOPIE VON RUN_SVC
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* run_svc
* part of cinit
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <stdio.h>
#include "cinit.h"
/***********************************************************************
* run_svc: run a service and beforeo all dependencies
*/
void kill_svc(char *rpath, pid_t pid)
{
int tmp;
char svc[PATH_MAX], svcparams[PATH_MAX];
struct stat buf;
D_PRINTF("starte kill_svc");
D_PRINTF(rpath);
/******************* absolute PATH ***************/
/* get current working dir */
if(! (int) getcwd(pathtmp,PATH_MAX)) {
perror("getcwd");
return 0;
}
/* change to rpath */
if(chdir(rpath) == -1) {
perror("chdir");
return 0;
}
/* get absolute name of rpath */
if(! (int) getcwd(abspath,PATH_MAX)) {
perror("getcwd2");
return 0;
}
/* change back */
if(chdir(pathtmp) == -1) {
perror("chdir2");
return 0;
}
/******************* REGISTER SERVICE ***************/
D_PRINTF(abspath);
tmp = msg_start_svc(abspath); /* mark us as temporary */
if(tmp == -1) return 1; /* already started */
/******************* BEGIN DEPENDENCIES ***************/
D_PRINTF("Starte needs");
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
strcat(pathtmp,C_NEEDS);
if( ! run_run_svcs(pathtmp) ) {
/* FIXME: add log + service name here */
D_PRINTF("some NEEDED services failed)");
msg_change_status(abspath, ST_FAIL, 0);
return 0;
}
D_PRINTF("Starte wants");
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
strcat(pathtmp,C_WANTS);
run_run_svcs(pathtmp); /* don't care about what happens with the want svc */
/******************* execute services ***************/
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
strcat(pathtmp,C_RESPAWN);
if( stat(pathtmp,&buf) == 0) {
D_PRINTF("Respawning");
pid = respawn_svc(abspath);
tmp = ST_RESPAWN;
} else {
D_PRINTF("exec_unce");
pid = exec_svc(abspath);
tmp = ST_ONCE;
}
if(!pid) {
msg_change_status(abspath, ST_FAIL, pid);
return 0;
}
D_PRINTF("Melde status");
if(!msg_change_status(abspath, tmp, pid) ) {
return 0;
}
return 1;
}

29
software/cinit/browse_source/cinit-0.0.4/client/msg_change_status.c
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@ -1,29 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* tell cinit that I want change the status of a service
* part of cinit
*/
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include "cinit.h"
int msg_change_status(char *svc, char status, pid_t pid)
{
D_PRINTF(svc);
if(!begin_msg(CMD_CHG_STATUS)) return 0;
if(!do_change_status(svc,&status,&pid,sock,ACT_CLIENT)) {
return 0;
}
if(!do_result(sock,NULL)) {
return 0;
}
return 1;
}

26
software/cinit/browse_source/cinit-0.0.4/client/msg_start_svc.c
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@ -1,26 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* tell cinit that I want to start a service
* part of cinit
*/
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include "cinit.h"
int msg_start_svc(char *svc)
{
D_PRINTF(svc);
D_PRINTF("writing message begin");
if(!begin_msg(CMD_START_SVC)) return 0;
D_PRINTF("writing service infos");
if(!do_start_svc(sock,svc,ACT_CLIENT)) return 0;
D_PRINTF("reading result");
if(!do_result(sock,NULL)) return 0;
D_PRINTF("gutes ende");
return 1;
}

68
software/cinit/browse_source/cinit-0.0.4/client/respawn_svc.c
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@ -1,68 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* run_svc
* part of cinit
*/
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
#include "cinit.h"
/* run a service, gets (relative or absolute) path */
pid_t respawn_svc(char *abspath)
{
pid_t pid;
int status;
int pipefd[2];
if(pipe(pipefd) == -1) {
perror("pope");
return 0;
}
pid = fork();
if(pid == -1) {
perror("forke");
return 0;
}
/******************** PARENT ********************/
if(pid > 0) {
/* if we read anything, our child succeded */
if( read(pipefd[0],&status,sizeof(status)) == -1) {
perror("read pope");
return 0;
}
return pid; /* return watchers pid */
}
/******************** CHILD ********************/
/* FIXME: add signal handler for shut down */
status = 1;
if( write(pipefd[1],&status,sizeof(status)) == -1) {
perror("read pope");
_exit(1);
}
while( status ) {
D_PRINTF(abspath);
pid = exec_svc(abspath, status);
waitpid(pid,&status,0);
if( ! WIFEXITED(status) ) {
if( WEXITSTATUS(status) ) {
/* sleep conf/c_sleep seconds on error exit */
sleep(SLEEP_SVC);
D_PRINTF("schlecht gestorben");
}
}
}
_exit(0);
}

77
software/cinit/browse_source/cinit-0.0.4/client/run_run_svc.c
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@ -1,77 +0,0 @@
/*
* cinit
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* run services parallel
*/
#include <sys/types.h>
#include <sys/wait.h>
#include <dirent.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include "cinit.h"
/***********************************************************************
* parallel run forked() run_svc()
*/
int run_run_svcs(char *abspath)
{
DIR *d_tmp = NULL;
struct dirent *tdirent;
char pathbuf[PATH_MAX];
pid_t pids[MAX_DEPS];
int status, i=0, ret = 1;
D_PRINTF(abspath);
d_tmp = opendir(abspath);
/* if there is no such dir, we are finished */
if(d_tmp == NULL) {
return 1;
}
while( (tdirent = readdir(d_tmp) ) != NULL) {
/* ignore . and .. and everything with a . at the beginning */
if ( *(tdirent->d_name) == '.') continue;
if(i < MAX_DEPS) {
pids[i] = fork();
i++;
} else {
LOG("to many dependencies");
break;
}
if(pids[i-1] == -1) { /* err */
LOG("fork failed");
return 0;
}
if(pids[i-1] == 0) { /* child */
strcpy(pathbuf,abspath);
strcat(pathbuf,"/");
strcat(pathbuf,tdirent->d_name);
if ( run_svc(pathbuf) )
_exit(0);
else
_exit(1);
}
}
closedir(d_tmp);
/* wait for pids */
while(i >= 0) {
waitpid(pids[i], &status, 0);
if( ! WIFEXITED(status)) {
ret = 0;
}
i--;
}
return ret;
}

111
software/cinit/browse_source/cinit-0.0.4/client/run_svc.c
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@ -1,111 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* run_svc
* part of cinit
*/
/* headers are clean */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <stdio.h>
#include "cinit.h"
/***********************************************************************
* run_svc: run a service and beforeo all dependencies
*/
int run_svc(char *rpath)
{
int tmp;
pid_t pid;
char abspath[PATH_MAX], pathtmp[PATH_MAX]; /* pathtmp = use-it-for-all bitch*/
struct stat buf;
D_PRINTF("starte run_svc");
D_PRINTF(rpath);
/******************* absolute PATH ***************/
/* get current working dir */
if(! (int) getcwd(pathtmp,PATH_MAX)) {
perror("getcwd");
return 0;
}
/* change to rpath */
if(chdir(rpath) == -1) {
perror("chdir");
return 0;
}
/* get absolute name of rpath */
if(! (int) getcwd(abspath,PATH_MAX)) {
perror("getcwd2");
return 0;
}
/* change back */
if(chdir(pathtmp) == -1) {
perror("chdir2");
return 0;
}
/******************* REGISTER SERVICE ***************/
D_PRINTF(abspath);
tmp = msg_start_svc(abspath); /* mark us as temporary */
if(tmp == -1) return 1; /* already started */
/******************* BEGIN DEPENDENCIES ***************/
D_PRINTF("Starte needs");
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
strcat(pathtmp,C_NEEDS);
if( stat(pathtmp,&buf) == 0 ) {
if( ! run_run_svcs(pathtmp) ) {
/* FIXME: add log + service name here */
D_PRINTF("some NEEDED services failed");
msg_change_status(abspath, ST_FAIL, 0);
return 0;
}
}
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
strcat(pathtmp,C_WANTS);
if( stat(pathtmp,&buf) == 0 ) {
D_PRINTF("Starte wants");
run_run_svcs(pathtmp); /* don't care about what happens with the want svc */
}
/******************* execute services ***************/
/*FIXME: check for C_ON, otherwise we are done! */
strcpy(pathtmp,abspath);
strcat(pathtmp,"/");
strcat(pathtmp,C_RESPAWN);
if( stat(pathtmp,&buf) == 0) {
pid = respawn_svc(abspath);
tmp = ST_RESPAWN;
} else {
tmp = 1;
pid = exec_svc(abspath, tmp);
tmp = ST_ONCE;
}
D_PRINTF("Melde status");
if(!pid) {
msg_change_status(abspath, ST_FAIL, pid);
return 0;
}
if(!msg_change_status(abspath, tmp, pid) ) {
return 0;
}
return 1;
}

3
software/cinit/browse_source/cinit-0.0.4/comm/README
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@ -1,3 +0,0 @@
comm/
The communication part of cinit.
The functions are used in client and in server code.

69
software/cinit/browse_source/cinit-0.0.4/comm/do_change_status.c
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@ -1,69 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* change status of a service
* part of cinit
*/
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include "cinit.h"
/* client:
* svc = service name
* status = status
* pid = pid
* sock2 = sock
* action = ACT_WRITE
* return: error code
*
* server:
* svc = buffer
* status = where to save status
* svc = bufferTH_MAX
* pid = where to save pid
* sock2 = nsock
* action = ACT_READ
* return: read service lenght
*/
int do_change_status(char *svc, char *status, pid_t *pid, int sock2, int action)
{
int tmp;
ssize_t (*fpoint)(int,void* ,size_t);
if(action == ACT_SERV) {
fpoint = read;
} else {
fpoint = ( ssize_t (*)(int, void*, size_t) ) write;
tmp = strlen(svc);
}
if(fpoint(sock2,&tmp,sizeof(tmp)) == -1) { /* length */
perror("i/o: length");
return 0;
}
if(tmp > PATH_MAX) {
return 0;
}
if(fpoint(sock2,svc,tmp) == -1) { /* write service name */
perror("i/o: service name");
return 0;
}
if(fpoint(sock2,status,sizeof(*status)) == -1) { /* status */
perror("i/o: status");
return 0;
}
if(fpoint(sock2,pid,sizeof(*pid)) == -1) { /* PID */
perror("i/o: PID");
return 0;
}
return tmp;
}

32
software/cinit/browse_source/cinit-0.0.4/comm/do_result.c
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@ -1,32 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* write result of action
* part of cinit
*/
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "cinit.h"
/* one handler for read and write! */
char do_result(int sock2, char *value)
{
ssize_t (*fpoint)(int,void* ,size_t);
char buf;
if(value == NULL) { /* client */
value = &buf;
fpoint = read;
} else {
fpoint = ( ssize_t (*)(int, void*, size_t) ) write;
}
if(fpoint(sock2,value,1) == -1) { /* result */
perror("i/o: result");
return 0;
}
return *value;
}

49
software/cinit/browse_source/cinit-0.0.4/comm/do_start_svc.c
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@ -1,49 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* try to start a service
* part of cinit
*/
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include "cinit.h"
/* serv:
* get buf
* return length
*
* client:
* print svc
* return errorcode
*/
int do_start_svc(int sock2, char *svc, int action)
{
int tmp;
ssize_t (*fpoint)(int,void* ,size_t);
/* set pointers */
if(action == ACT_CLIENT) {
fpoint = ( ssize_t (*)(int, void*, size_t) ) write;
tmp = strlen(svc);
} else {
fpoint = read;
}
/* read / write lenght */
if( fpoint(sock2,&tmp,sizeof(tmp)) == -1) {
perror("i/o: len");
return 0;
}
if(tmp > PATH_MAX) return 0;
/* write/read service name */
if( fpoint(sock2,svc,tmp) == -1) {
perror("i/o: service name");
return 0;
}
return tmp;
}

1
software/cinit/browse_source/cinit-0.0.4/conf/.README
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@ -1 +0,0 @@
This directory contains the cinit configuration.

9
software/cinit/browse_source/cinit-0.0.4/conf/c_env
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@ -1,9 +0,0 @@
.env
The extension to c_on and c_off, which will contain the environment \n seperated.
For instance:
CLIENT_IP=192.168.23.42
ACCEPT_CONN=32

4
software/cinit/browse_source/cinit-0.0.4/conf/c_halt
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@ -1,4 +0,0 @@
halt
Name of the service we should start when 'halting' (system stop, but no
power off).

3
software/cinit/browse_source/cinit-0.0.4/conf/c_init
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@ -1,3 +0,0 @@
init
The name of the init service.

3
software/cinit/browse_source/cinit-0.0.4/conf/c_needs
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@ -1,3 +0,0 @@
needs
Name of the service sub-directory containing the needed services.

3
software/cinit/browse_source/cinit-0.0.4/conf/c_off
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@ -1,3 +0,0 @@
off
Name of the file we start, when stopping the service.

3
software/cinit/browse_source/cinit-0.0.4/conf/c_on
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@ -1,3 +0,0 @@
on
Name of the file we start, when starting the service.

3
software/cinit/browse_source/cinit-0.0.4/conf/c_params
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@ -1,3 +0,0 @@
.params
The extension to c_on and c_off, which will contain the parameters \n seperated.

3
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poweroff
Name of the service we should start, when system power-off is called.

3
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reboot
Name of the service we should start on reboot.

3
software/cinit/browse_source/cinit-0.0.4/conf/c_respawn
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respawn
If this file exists in a service directory, cinit will respawn the service.

4
software/cinit/browse_source/cinit-0.0.4/conf/c_sock
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coala
The name of the socket cinit will use (currently: below tmpdir,
see doc/ipc.thoughts).

3
software/cinit/browse_source/cinit-0.0.4/conf/c_tmp
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tmp
The name of the temporary directory, where we'll mount tmpfs to create the socket

4
software/cinit/browse_source/cinit-0.0.4/conf/c_tmpfs
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tmpfs
The name of the filesystem to use to mount a memory filesystem.
On Linux this is "tmpfs".

4
software/cinit/browse_source/cinit-0.0.4/conf/c_tmpmount
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@ -1,4 +0,0 @@
tmpfs
The name of the mount target, we'll mount with c_tmpfs on the c_tmp directory.
On Linux this can be anything, but we will use the default "tmpfs".

3
software/cinit/browse_source/cinit-0.0.4/conf/c_wants
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wants
Name of the service sub-directory containing the wanted services.

3
software/cinit/browse_source/cinit-0.0.4/conf/cinit_dir
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/etc/cinit
This is where all configuration for cinit will be stored.

1
software/cinit/browse_source/cinit-0.0.4/conf/destdir
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@ -1 +0,0 @@

4
software/cinit/browse_source/cinit-0.0.4/conf/getty_dir
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getty
This is the subdirectry in which the scripts will create the gettys,
if you are using 'install-example'. It's not used be cinit internally.

3
software/cinit/browse_source/cinit-0.0.4/conf/install_directory
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-d
Parameter to install_prog to create directories.

4
software/cinit/browse_source/cinit-0.0.4/conf/install_prog
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@ -1,4 +0,0 @@
/usr/bin/install
Program we use to install. install_directory contains parameter
to create directory.

4
software/cinit/browse_source/cinit-0.0.4/conf/prefix
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/
Where to install cinit. Normally this will be /, but you can put in anywhere.
The subdirectory 'sbin' under this prefix must be reabable by the kernel.

5
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@ -1,5 +0,0 @@
2
Seconds to sleep after sending SIGTERM, before sending SIGKILL to every
process. 5 is a good working value, but makes me tired. Testing with
2 currently.

3
software/cinit/browse_source/cinit-0.0.4/conf/sleep_svc
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@ -1,3 +0,0 @@
5
How many seconds to sleep before respawning a failed process.

3
software/cinit/browse_source/cinit-0.0.4/conf/sock_group
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root
The group, which should own the communication socket.

3
software/cinit/browse_source/cinit-0.0.4/conf/sock_mode
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0770
Octal mode of socket.

4
software/cinit/browse_source/cinit-0.0.4/conf/sock_queue
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32
Maximum process waiting in the socket queue. The default is much
more than enough.

3
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root
The one who should own the communication socket.

20
software/cinit/browse_source/cinit-0.0.4/doc/.buildwarn
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-------------
W A R N I N G
-------------
****************************************************************************
THIS IS A PRE-RELEASE, NOT YET THOUGHT TO BE USED IN PRODUCTIVE ENVIRONMENT!
****************************************************************************
First of all configure cinit through the configuration files found in conf/.
Especially look at conf/*tmp*.
The documentation can be found in doc/.
After reading and configuring use:
"make all" - to build cinit
"make install" - to install cinit
"make install-example" - to install cinit configuration example
-> WARNING: the last two make targets do not honour $DESTDIR yet!

14
software/cinit/browse_source/cinit-0.0.4/doc/caveats
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'Geheimnisse' in German
- Dependencies beginning with a '.' (dot) are ignored.
So you can temporary disable a dependency moving it to
want/.name
- Why is the name of the socket "coala"?
Well, coala could mean 'cinit object abstract layer access', but
perhaps it's a much simpler reason.
- cinit will start a little bit faster, if you omit non needed
'wants' and 'needs' dirs, as they need to be scanned, if they
exist

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--------------------------------------------------------------------------------
cinit commands, Nico Schottelius 2005-04-28
--------------------------------------------------------------------------------
cinit allows communication through a socket (see ipc.thoughs for reasons).
Sockets allow to find out the accessing uid, gid and pid (uses SO_PEERCRED as
socketoption).
The communication-protocol is binary.
--------------------------------------------------------------------------------
Protocol overview
--------------------------------------------------------------------------------
Any communication begins with a command. A command is a one byte
unsigned char. Depending on the command, the communication has its own
semantics.
Commands are: (values can be found in cinit.h)
CMD_START_SVC: I want to start a service.
CMD_CHG_STATUS: I want to change the status of a service.
CMD_STOP_SVC: Please shutdown a service and its dependencies.
CMD_KILL_SVC: Shutdown a service, don't care about its dependencies.
CMD_RESCUE: Kill everything, and spawn a sulogin shell.
CMD_INIT: Start all services (again possibly).
CMD_HALT: Halt the system*)
CMD_REBOOT: Reboot the system*)
CMD_POWEROFF: Power-off the system*)
*) The commands are not and maybe will never be implemented,
as they are realized as signals.
--------------------------------------------------------------------------------
Detailled command-listing
--------------------------------------------------------------------------------
CMD_START_SVC
1. int len; /* length of service name, including \0 */
2. char *svc; /* name of the service, absolute pathname */
cinit returns:
a) ok, a SID, a service ID: int svc_id; [ really need int? ]
b) fail, [currently only fail is returned]
a) already running
b) svc_name too long / not allowed
[ A service identification is used for faster searching in cinit.
It is also a hint for developers of external software, that they should not
be able to use CMD_CHG_STATUS, if they didn't start a service.
They should use CMD_STOP_SVC to stop a service.
Starting a service is currently done via exec() in the external program or
a cinit-fork(). ]
CMD1CHG_STATUS: I want to change the status of a service.
0. int len;
1. char *svc;
2. char status; /* status:
once: started successfully the service once.
fail: tried to start once, but the service exit ungracefully
respawn: I am on it, as soon it exists I'll restart! */
2. pid_t pid /* the pid of the service, if started once
or the pid of the service watcher, if respawning */
cinit returns: MSG_OK|MSG_FAIL (char)
CMD_STOP_SVC: Please shutdown a service and its dependencies.
1. int len; /* length of service name, including \0 */
2. char *svc; /* name of the service, absolute pathname */
cinit returns: ready...
CMD_KILL_SVC: Shutdown a service, don't care about its dependencies.
1. int len; /* length of service name, including \0 */
2. char *svc; /* name of the service, absolute pathname */
cinit returns: ready...
CMD_INIT: Start all services (again possibly).
cinit returns: ready...
CMD_RESCUE: Kill everything, and spawn a sulogin shell.
CMD_HALT: Halt the system.
CMD_REBOOT: Reboot the system.
CMD_POWEROFF: Power-off the system.

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software/cinit/browse_source/cinit-0.0.4/doc/configuring.cinit
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--------------------------------------------------------------------------------
configuring cinit, Nico Schottelius 2005-05-28
--------------------------------------------------------------------------------
Services
mostly no shell scripts
linking to system configuration
adding services with cinit.add.service? -> later, meta-deps?
pidfilehack - from fefe/minit?
meta-deps

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@ -1,20 +0,0 @@
kind tot 17 ...
Read path: /
Read path: e
Read path: t
Read path: c
Read path: /
Read path: c
Read path: i
Read path: n
Read path: i
Read path: t
Read path: /
Read path: t
Read path: e
Read path: s
Read path: t
Read path: s
Read path: v
Read path: c

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software/cinit/browse_source/cinit-0.0.4/doc/how_it_works_internally
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The following is a very simple process structure of cinit internals:
cinit-main starts
\
|-> execute run_init_svc()
| \ run_svc(CINIT_INIT);
| | check status <-------------------\
| | set status = temp |
| \ check dependencies |
| | fork(run_svc()) for every WANT |
| | run_svc() for every NEED /
| / check if respawning { do .. while(repawn?)
| \ yes: (remember: run_svc _must_ return!)
| | msg_change_status(respawn)
| | add watcher_signal handler to stop! (SIGTERM)
| | fork(exec_svc) <--|
| | waitpid(fork) | while(1) { ... }
| \ sleep(WAIT_SECS) ---/
| | no: fork(exec_svc)
| \ waitpid(fork) -> yes, wait!
| | msg_change_status
| /
| /
| -> while(1)
| - listen to signals
| - listen on socket

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--------------------------------------------------------------------------------
Thoughts about different UNIX-IPC, Nico Schottelius 2005-04-28
--------------------------------------------------------------------------------
Howto cinit communicates with
a) cinit-forks
b) any other program
a) cinit-forks
a.1) shared memory
Access could generally be done with shared memory. The problem with
that is, that -lrt is required, which implicits -lpthread, which
makes linking staticly problematic (at least for glibc).
a.2) pipes
A maximum of ~510 pipes could be used ( (1024-3)/2),
1024=max fds, -3=already opened (stderr/stdin/stdout), /2=
two fds needed per clients).
Pipes cannot be use easily through forks of forks.
a.3) fifos
FIFOs are easy to use, but you would need to create two FIFOs
for _every_ service, as with only two FIFOs we cannot reliable
detect, _who_ is writting to us currently and who wants to read.
a.4) system-v-ipc
No documentation found nor tested.
a.5) sockets
Are indeed a very clean way. There's only one problem:
bind() fails on read-only mounted devices:
- The socket either does not exists and cannot be created
- or the socket exists, but bind() refuses to reuse it
(error: Address already in use)
Imho bind() should even honour the socket-option SO_REUSEADDR,
which allows to re-use a socket, if there's no other program bound to.
As far as I can see, SO_REUSEADDR is only honoured, if socket is of
type PF_INET (we use PF_UNIX) and POSIX does only specify how to
check for support, but not that sockets have to be able to use
SO_REUSEADDR.
That way, we are forced to mount a temporary filesystem on
/etc/cinit/tmp and create the socket below this directory. This is not
the clean and easy solution one would wish. Still, sockets
seem to be the cleanest and most reliable way to have IPC for
this situation.
See socket(2), bind(2), listen(2), accept(2), socket(7) and unix(7)
for help.
b) any other program
What you can do is to tell cinit to
- reboot,
- halt and
- poweroff.
Simple send cinit a signal, what todo:
SIGUSR1: reboot
SIGUSR2: poweroff
TERM: halt
See signal(2) and signal(7) for help and serv/sig_reboot.c for implementation.
--------------------------------------------------------------------------------

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From: Nico Schottelius
Subject: Unix IPC, socket/AF_UNIX; bind on r/o devices?
Date: 09 May 2005 09:51:27 GMT
To: comp.unix.programmer
Hello!
Situation:
- everything mounted readonly (as when starting the system)
- one process with n children, which may have n children (recursive)
- all the children and children of children should be able to talk to the
first parent
Problem:
- Using bind() will fail, because
a) socket cannot created
b) the existing socket cannot be reused
Other possibilities not working:
- shared memory is not an option, as one need
-lrt, which needs -lpthread, which is problematic to link statically
- pipes: handling the pipes from parent to child of child of child
would be hard to program
- socketpair: should be the same problematic as it's with pipes
- fifos: one would have to create the fifos before and two fifos
for each child; possible, but very unelegant; and one would have
to memorize, which child is connected to which fifo; again possible,
but somehow unelegant
- signaling: one could implement communication with some kind of
morse code with signals, but that won't be a good solution
Questions:
- Is there any way, case b) (socket already existing) can be solved in
a way that I tell bind() to use an existing socket?
- What would be the best solution to talk bidirectional to clients
in this scenario?
I appreciate any hint, as I really like the socket mechanism and would
like to keep it.
Thanks in advance,
Nico

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--------------------------------------------------------------------------------
Meta-dependencies,
Nico Schottelius 2005-05-24
--------------------------------------------------------------------------------
1. What are Meta-Dependencies?
2. What are the advantages / disadvantages of it?
3. The solutions
1. What are Meta-Dependencies?
A Meta-depedency describes the type of service another service wants, but
not the exact service.
Example:
remote-services/ssh wants a dns-resolver, it does not care about
what it is (tinycach, bind, maradns, ...), but that it does
name caching.
2. What are the advantages / disadvantages of it?
Meta means beeing indirect. Indirect means beeing slow. So, if
cinit would have to care about meta-dependencies, the code would become
much bigger, bloatig and much slower.
On the other hand, on would perhaps like to use meta-dependencies, if
one tests different services with the same functionality or switches
them dependending on the situation.
3. The solutions
As told above, cinit won't care about meta-dependencies and as you'll see
it does not need to.
The first solution would be to have a mapping table outside of cinit.
This table could be a file for every meta-dependency and contain the
possibilities:
dns-resolver:
remote-services/bind
local-services/tinydns
...
So one would have to call a program, which creates the real cinit
configuration. This is imho not a very elegant solution and could cause
problems, when handling self-written services.
Another possibility is to use symlinks: Create service-directories
for all services beeing installed, but do dependencies in "wants/"
and "needs/" to a symlink (for instance create /etc/cinit/meta
and link to real services in there):
/etc/cinit/meta/dns-resolver -> ../remote-services/bind/

52
software/cinit/browse_source/cinit-0.0.4/doc/posix.aardvark.bug.report
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@ -1,52 +0,0 @@
To: austin-review-l__AT__opengroup.org
From: nico-posix__AT__schottelius.org
Subject: Bug in TC2-d6 bind - bind a name to a socket
Reply-To: austin-group-l__AT__opengroup.org
Bug report from : Nico Schottelius , cLinux
(Note that the reply-to line automatically redirects
to austin-group-l__AT__opengroup.org for further discussion on bug reports)
@ page 1 line 0 section bind - bind a name to a socket objection {-1}
Problem:
bind should 'assign a name to a socket', but in particular environments it will fail, where it could succeed.
Long Description:
When opening a new socket, with type PF_UNIX
(sock = socket(PF_UNIX,SOCK_STREAM,0);) and one sets
the socket option SO_REUSEADDR
(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp))),
bind does not honour this setting.
It is reported on irc channels, that SO_REUSEADDR is only supported on
PF_INET sockets and that's what I would claim a bug.
If a socket exists in the filesystem and no process is bound to
it, bind wail fail anyway.
This is especially problematic, when one is in an environment,
which is pre-startup (like beeing init) and one wants to use
sockets, but everything is mounted read-only.
So, if bind() would honour the option, it would be able
to bind() to a socket, which exists (as creating one on a
read-only filesystem is not possible).
Action:
Proposal:
Add better specification to either socket(7) or bind(2), which
explains the behaviour of bind, when this option is set
or even better: Specify, that bind should take care of this bit,
also when using PF_UNIX.
In general the socket(7) manpage should explain more in detail
or at least reference other documents (unix(7)?), which explain what the
option for a specific protocol does.

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--------------------------------------------------------------------------------
Shutting down the system
Nico Schotteilus, 2005-05-24
--------------------------------------------------------------------------------
cinit wird normalerweise alles herunterfahren und $etwas tun.
1. What to do to allow a system to shutdown?
Create /etc/cinit/reboot, /etc/cinit/power-off and /etc/cinit/halt.
It's in most scenarios also enough to create only one of those
service directories and link all others against the first one:
[21:38] ei:cinit# mkdir /etc/cinit/power-off
[21:38] ei:cinit# ln -s power-off /etc/cinit/reboot
[21:38] ei:cinit# ln -s power-off /etc/cinit/halt
Then create the needed services, which are almost always:
- swapoff: disable swap
- sync: sync buffers to disk
- umount: umount everything
- remount: remount root read-only
on oder off?????
Add dependencies to
You can also use
What todo when shutting down (reboot, halt, poweroff) the system:
1. Cycle through service list and
while(processes--) {
Stop_current_processs
}
- Stop_current_processs
\ if(status = respawn)
| -> kill -TERM pid
| exec_svc(svc/off, svc/off.params)
kill remaining processes with SIGTERM
sleep(WAIT_KILL)
kill remaining processes with SIGKILL
sync;
umount(*)
reboot
- cycle through running services, kill them the other way round
- stop respawing processes
- start off-process of running services
- don't shutdown failed services
kill_svc(struct stat svc);

24
software/cinit/browse_source/cinit-0.0.4/doc/thoughts.closed
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@ -1,24 +0,0 @@
1. using SIDs (service IDs) to communicated with external processes
This was a very bad idea: The external program could exploit us by
specifying an arbitary big SID (as the SID is simply the index
of our service array).
2. using function pointers to handle messages
Seems like it works fine. We have handlers for each
message (do_*), which are called by client and server.
The function pointer is simply to read or write, dependending
if it is the client or the server. This way we don't need
to rewrite communications parts.
3. Using different storage
First all services were saved in a service array of the size
MAX_SVC. This has been replaced by a double-linked list.
Have a look at serv/list.c.
4. Using sockets for IPC (between cinit forks)
Works very fine, though we have to mount a temporary fs before.

14
software/cinit/browse_source/cinit-0.0.4/doc/thoughts.open
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@ -1,14 +0,0 @@
- Using a directory params with 1,2,3,4 for argv
This would make substituting a single argument easier, but only
if you know which one you have to change. This would add
an additional dirent(), which would not replace the current read(), but
add more open() and close()s.
- Using TCP/IP sockets
This would be a very small change in the code, but would allow
to control cinit over network. Since there is no authentication,
this would be highly insecure. On the other hand, cinit
could control the parallel start of many hosts, if they
should become 'one' computer at the end.

20
software/cinit/browse_source/cinit-0.0.4/generic/mini_printf.c
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@ -1,20 +0,0 @@
/*
* cinit
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* print string
*/
#include <unistd.h>
void mini_printf(char *str,int fd)
{
char *p;
p = str;
while ( *p != '\0') {
write(fd,p,1);
p++;
}
write(fd,"\n",1); /* FIXME: only when console */
}

45
software/cinit/browse_source/cinit-0.0.4/generic/set_signals.c
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@ -1,45 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux/cinit
*/
#include <signal.h>
#include <stdio.h>
#include "cinit.h"
void set_signals(int action)
{
struct sigaction sa;
if(action == ACT_SERV) {
sa.sa_handler=SIG_IGN;
} else {
sa.sa_handler=SIG_DFL;
}
sigaction(SIGINT,&sa,NULL); /* ignore ctr+c */
sigaction(SIGPIPE,&sa,NULL); /* what todo when pipe/fifo closed */
sigaction(SIGCHLD,&sa,NULL); /* what todo when child exited */
sigaction(SIGUSR2,&sa,NULL); /* USR2 */
sigaction(SIGQUIT,&sa,NULL); /* QUIT... */
sigaction(SIGTTIN,&sa,NULL);
sigaction(SIGTTOU,&sa,NULL);
/* sigio is called to act on the socket */
if(action == ACT_SERV) {
sa.sa_handler=sigio;
}
sigaction(SIGIO,&sa,NULL);
/* signal handlers to do special things with: reboot */
if(action == ACT_SERV) {
sa.sa_handler=sig_reboot;
}
// sigaction(SIGINT,&sa,NULL); /* FIXME: Testing only: ctr+c = REBOOT!!! */
sigaction(SIGUSR1,&sa,NULL);
sigaction(SIGTERM,&sa,NULL);
sigaction(SIGHUP,&sa,NULL);
/* sigstop can't be ignored, do the manpages say */
/* sigaction(SIGSTOP,&sa,NULL); */
}

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software/cinit/browse_source/cinit-0.0.4/old/add_mod_svc.c
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@ -1,42 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* add_svc
* part of cinit
*/
#include <string.h>
#include "cinit.h"
/* we return the service id or -1 on error*/
int add_mod_svc(char *svc, char status, pid_t pid)
{
int tmp = 0;
/* check if service exists, if so, set new status, return sid */
tmp = chk_svc(svc);
if( tmp != -1 ) {
svc_list.svca[tmp].status = status;
return tmp;
}
/* still here? than there is no such service */
if(svc_list.process < MAX_SVC) {
printf("[%d]: %s (%d)\n",svc_list.process,svc,pid);
svc_list.svca[svc_list.process].abs_path = strdup(svc);
if(svc_list.svca[svc_list.process].abs_path == NULL) {
LOG("strdup failed!");
return -1;
}
svc_list.svca[svc_list.process].pid = pid;
/* inkrement later, as we count argv[0..n] */
(svc_list.process)++;
} else {
LOG("too many services");
return -1;
}
/* return _our_ service id */
return (svc_list.process -1);
}

36
software/cinit/browse_source/cinit-0.0.4/old/cerr.c
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@ -1,36 +0,0 @@
/*
* cinit
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* print error to stderr and exist
*/
#include <unistd.h>
#include "cinit.h"
void cerr(char *string, int status)
{
char *p;
p = string;
while ( *p != '\0') {
write(2,p,1);
p++;
}
write(2,"\n",1);
switch(status) {
case RT_CHLD_FAIL:
case RT_CHLD_OK:
_exit(status);
;;
case RT_PAR_FAIL: /* FIXME: if status is RT_PAR_FAIL, start sulogin */
_exit(23);
;;
case RT_PAR_OK:
return;
;;
}
/* FIXME: return if in cinit, _exit on fork() */
// if(...)
}

15
software/cinit/browse_source/cinit-0.0.4/old/cinit.add.shutdown.reboot.poweroff
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@ -1,15 +0,0 @@
#!/bin/sh
# Nico Schottelius
# cinit: add shutdown/reboot/poweroff service
set -e
# init variables
. $(dirname $0)/cinit.read-conf
BASEDIR=$DESTDIR/$CINIT_DIR
# create halt, link reboot and poweroff to it
mkdir "$BASEDIR/$C_HALT"
ln -s "$C_HALT" "$BASEDIR/$C_REBOOT"
ln -s "$C_HALT" "$BASEDIR/$C_POWEROFF"

105
software/cinit/browse_source/cinit-0.0.4/old/cinit.c01
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@ -1,105 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux
*/
#define CINIT_DIR "/etc/cinit"
#define C_INIT "init"
#define C_SHD "shutdown"
#define C_REBOOT "reboot"
#define C_NEEDS "needs"
#define C_WANTS "wants"
/* opendir() */
#include <sys/types.h>
#include <dirent.h>
/* *stat() */
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#define EKEL "/etc/cinit/init/wants"
void cerr(char *msg)
{
printf("%s\n", msg);
}
/*
* run_svc: gets a wants/needs directory
* returns whether _one_ service failed or not
*/
int run_svc(char *path)
{
DIR *d_tmp = NULL;
struct dirent *tdirent;
char *p, pathbuf[1024];
struct stat buf;
/* check if already running / ran / currently starting */
/* check for needs -> forked() ? */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_NEEDS);
if( ! stat(pathbuf,&buf) ) {
printf("dir gibt es, %s\n", pathbuf);
}
/* check for wants -> forked() ? */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_WANTS);
if( ! stat(pathbuf,&buf) ) printf("dir gibt es, %s\n", pathbuf);
d_tmp = opendir(path);
if(d_tmp == NULL) {
cerr("failed to open dir...");
return 0;
}
while( (tdirent = readdir(d_tmp) ) != NULL) {
if (strcmp(tdirent->d_name, ".") == 0 || strcmp(tdirent->d_name, "..") == 0)
continue;
p=tdirent->d_name;
while(*p != '\0') {
write(1,p,1);
p++;
}
write(1,"\n",1);
}
closedir(d_tmp);
return 1;
}
int main()
{
char buf[256];
int tmp;
strcpy(buf,CINIT_DIR);
tmp = strlen(CINIT_DIR);
buf[tmp] = '/';
strcpy(&buf[tmp+1],C_INIT);
printf("path: %s\n",buf);
run_svc("/etc/cinit/init");
run_svc("/etc/cinit2/init");
run_svc("/NOT_THERE");
}

198
software/cinit/browse_source/cinit-0.0.4/old/cinit.c02
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@ -1,198 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux
*/
#define CINIT_DIR "/etc/cinit"
#define C_INIT "init"
#define C_SHD "shutdown"
#define C_REBOOT "reboot"
#define C_NEEDS "needs"
#define C_WANTS "wants"
#define C_RUN "run"
/* opendir() */
#include <sys/types.h>
#include <dirent.h>
/* *stat() */
#include <sys/stat.h>
#include <unistd.h>
/* wait() */
#include <sys/wait.h>
/* strlen */
#include <string.h>
#include <stdio.h>
#define EKEL "/etc/cinit/init/wants"
void cerr(char *msg)
{
printf("%s\n", msg);
}
/***********************************************************************
* parallel run forked() run_svc()
*/
#define MAX_PAR 32
int run_run_svcs(char *rpath)
{
DIR *d_tmp = NULL;
struct dirent *tdirent;
char *p, pathbuf[1024];
pid_t pids[MAX_PAR];
int tmp,i=0;
printf("run_run_svcs on: %s\n",rpath);
d_tmp = opendir(rpath);
if(d_tmp == NULL) {
printf("Failed to open dir: %s", rpath);
return 0;
}
while( (tdirent = readdir(d_tmp) ) != NULL) {
if (strcmp(tdirent->d_name, ".") == 0
|| strcmp(tdirent->d_name, "..") == 0)
continue;
if(i < MAX_PAR) {
pids[i] = fork();
i++;
} else {
cerr("to many dependencies");
return 1;
}
if(pids[i-1] == -1) { /* err */
cerr("fork failed\n");
return 0;
} else if(pids[i-1] == 0) { /* child */
printf("Service zu starten nun: %s\n", tdirent->d_name);
run_svc(tdirent->d_name);
_exit(0);
} else /* the parent simply goes the loop again */
printf("run_svcs_PARENT\n");
}
closedir(d_tmp);
/* wait for pids */
while(i >= 0) {
// printf("waiting for %d ... \n",i);
waitpid(pids[i], &tmp, 0);
i--;
}
}
/***********************************************************************
* run_svc: gets a wants/needs directory
* returns whether _one_ service failed or not
*/
int run_svc(char *path)
{
DIR *d_tmp = NULL;
struct dirent *tdirent;
char *p, pathbuf[1024];
struct stat buf;
int tmp;
/* check if already running / ran / currently starting */
/* check for service dir */
if( stat(path,&buf) ) {
printf("no such service: %s\n", path);
return 1;
}
/* check for needs -> forked() */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_NEEDS);
if( ! stat(pathbuf,&buf) ) {
printf("going for %s\n",pathbuf);
tmp = fork();
if(tmp == -1) {
printf("error ...\n");
exit(1);
} else if(tmp == 0) { /* child */
printf("child for run_run_svcs()\n");
run_run_svcs(pathbuf);
_exit(0);
printf("ZOOOMBIE\n");
}
else
printf("parent\n");
}
/* check for wants -> forked() ? */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_WANTS);
if( ! stat(pathbuf,&buf) ) {
printf("dir gibt es auch: %s\n", pathbuf);
run_run_svcs(pathbuf);
}
/* check for service/run */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_RUN);
d_tmp = opendir(pathbuf);
if(d_tmp == NULL) {
cerr("failed to open dir...");
return 0;
}
while( (tdirent = readdir(d_tmp) ) != NULL) {
if (strcmp(tdirent->d_name, ".") == 0 || strcmp(tdirent->d_name, "..") == 0)
continue;
p=tdirent->d_name;
while(*p != '\0') {
write(1,p,1);
p++;
}
write(1,"\n",1);
}
closedir(d_tmp);
return 1;
}
/***********************************************************************
* the main procedure
*/
int main()
{
char buf[256];
int tmp;
strcpy(buf,CINIT_DIR);
tmp = strlen(CINIT_DIR);
buf[tmp] = '/';
strcpy(&buf[tmp+1],C_INIT);
printf("path: %s\n",buf);
run_svc("/etc/cinit/init");
run_svc("/NOT_THERE");
return 0;
}

241
software/cinit/browse_source/cinit-0.0.4/old/cinit.c03
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@ -1,241 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux
*/
#define CINIT_DIR "/etc/cinit"
#define C_INIT "init"
#define C_SHD "shutdown"
#define C_REBOOT "reboot"
#define C_NEEDS "needs"
#define C_WANTS "wants"
#define C_RUN "run"
/* opendir() */
#include <sys/types.h>
#include <dirent.h>
/* *stat() */
#include <sys/stat.h>
#include <unistd.h>
/* wait() */
#include <sys/wait.h>
/* strlen */
#include <string.h>
#include <stdio.h>
#include "cinit.h"
#define EKEL "/etc/cinit/init/wants"
/* status of a service */
#define ST_TMP 1 /* currently working on it */
#define ST_ONCE 2 /* executed once */
#define ST_RESPAWN 3 /* running and respawning */
/* array of svc */
/* linked list of services */
/* balanced trees */
struct svc {
char *abs_path;
// struct svc *next;
int status; /* tmp, respawn, ran once */
/* evtl: */
};
struct svcl {
struct svc svc_list[1000];
int process;
} svc_list;
void cerr(char *msg)
{
printf("%s\n", msg);
}
/***********************************************************************
* parallel run forked() run_svc()
*/
#define MAX_PAR 32
int run_run_svcs(char *rpath)
{
DIR *d_tmp = NULL;
struct dirent *tdirent;
char *p, pathbuf[1024];
pid_t pids[MAX_PAR];
int tmp,i=0;
printf("run_run_svcs on: %s\n",rpath);
d_tmp = opendir(rpath);
if(d_tmp == NULL) {
printf("Failed to open dir: %s", rpath);
return 0;
}
while( (tdirent = readdir(d_tmp) ) != NULL) {
if (strcmp(tdirent->d_name, ".") == 0
|| strcmp(tdirent->d_name, "..") == 0)
continue;
if(i < MAX_PAR) {
pids[i] = fork();
i++;
} else {
cerr("to many dependencies");
return 1;
}
if(pids[i-1] == -1) { /* err */
cerr("fork failed\n");
return 0;
} else if(pids[i-1] == 0) { /* child */
printf("Service zu starten nun: %s\n", tdirent->d_name);
run_svc(tdirent->d_name);
_exit(0);
} else /* the parent simply goes the loop again */
printf("run_svcs_PARENT\n");
}
closedir(d_tmp);
/* wait for pids */
while(i >= 0) {
// printf("waiting for %d ... \n",i);
waitpid(pids[i], &tmp, 0);
i--;
}
}
/***********************************************************************
* run_svc: gets a wants/needs directory
* returns whether _one_ service failed or not
*/
int run_svc(char *path)
{
DIR *d_tmp = NULL;
struct dirent *tdirent;
char *p, pathbuf[1024];
struct stat buf;
int tmp;
/* check if already running / ran / currently starting */
/* debug */
getcwd(pathbuf,1024);
printf("dir: %s\n",pathbuf);
/* check for service dir */
if( stat(path,&buf) ) {
printf("no such service: %s\n", path);
return 1;
}
/* check for needs -> forked() */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_NEEDS);
if( ! stat(pathbuf,&buf) ) {
printf("going for %s\n",pathbuf);
tmp = fork();
if(tmp == -1) {
printf("error ...\n");
exit(1);
} else if(tmp == 0) { /* child */
printf("child for run_run_svcs()\n");
run_run_svcs(pathbuf);
_exit(0);
printf("ZOOOMBIE\n");
}
else
printf("parent\n");
}
/* check for wants -> forked() ? */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_WANTS);
if( ! stat(pathbuf,&buf) ) {
printf("dir gibt es auch: %s\n", pathbuf);
run_run_svcs(pathbuf);
}
/* check for service/run */
strcpy(pathbuf,path);
strcat(pathbuf,"/");
strcat(pathbuf,C_RUN);
d_tmp = opendir(pathbuf);
if(d_tmp == NULL) {
cerr("failed to open dir...");
return 0;
}
while( (tdirent = readdir(d_tmp) ) != NULL) {
if (strcmp(tdirent->d_name, ".") == 0 || strcmp(tdirent->d_name, "..") == 0)
continue;
p=tdirent->d_name;
while(*p != '\0') {
write(1,p,1);
p++;
}
write(1,"\n",1);
}
closedir(d_tmp);
return 1;
}
/***********************************************************************
* the main procedure
*/
int main()
{
char pathbuf[MAXPATH];
struct stat buf;
strcpy(pathbuf,CINIT_DIR);
strcat(pathbuf,"/");
strcat(pathbuf,C_INIT);
printf("path: %s\n",pathbuf);
svc_list.process = 0;
/* stat, checkdir */
if( stat(pathbuf,&buf) ) {
printf("PANIC ACTION: init dir missing\n");
return 1;
} else if( ! S_ISDIR(buf.st_mode) ) {
printf("PANIC ACTION: init is not a dir\n");
return 1;
}
if( chdir(pathbuf) == -1) {
printf("PANIC ACTION: chdir(%s) failed!\n",pathbuf);
return 1;
}
run_svc("/etc/cinit/init");
// run_svc("");
// run_svc("/NOT_THERE");
// execl("/bin/zsh","zsh", "-l");
return 0;
}

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/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux
*/
/* *stat() */
#include <sys/stat.h>
#include <unistd.h>
/* open */
#include <fcntl.h>
/* siggnal */
#include <signal.h>
/* PATH_MAX */
#include <limits.h>
/* printf() */
//#include <stdio.h>
/* str* */
#include <string.h>
#include "cinit.h"
/* global variable */
struct svcl svc_list;
int f_in, f_out;
/***********************************************************************
* the main procedure
*/
int main()
{
char pathbuf[PATH_MAX];
char buf[1223];
struct stat sbuf;
int i;
struct sigaction sa;
/* signal handlers to ignore */
sa.sa_handler=SIG_IGN;
// sigaction(SIGINT,&sa,NULL); /* ignore ctr+c */
sigaction(SIGSTP,&sa,NULL); /* ignore ctr+z, stop */
D_PRINTF(CINIT_INIT);
/* count of started processes */
svc_list.process = 0;
/* begin to handle signals */
/* stat, checkdir */
if( stat(CINIT_INIT,&sbuf) ) {
cerr("PANIC ACTION: init dir missing", RT_PAR_FAIL);
} else if( ! S_ISDIR(sbuf.st_mode) ) {
cerr("PANIC ACTION: init is not a dir", RT_PAR_FAIL);
}
if( chdir(CINIT_INIT) == -1)
cerr("PANIC ACTION: chdir to /etc/cinit/init failed!",RT_PAR_FAIL);
/* open communication fifos */
f_in = open(CINIT_DIR SLASH F_IN, O_RDWR);
f_out = open(CINIT_DIR SLASH F_OUT, O_RDWR);
if(f_in == -1 || f_out == -1) cerr("opening fifo failed\n",RT_PAR_FAIL);
/* initial run, only if we are 'real' init' */
// if( getpid() == 1) {
i = run_init_svc();
printf("Initialer Start rueckgabe: %d\n", i);
// }
/* signal handlers to do special things with */
// something else sa.sa_handler=SIG_IGN;
sigaction(SIGUSR1,&sa,NULL); /* reboot on sigusr1 */
sigaction(SIGUSR1,&sa,NULL); /* power-off on sigusr2 */
sigaction(SIGTERM,&sa,NULL); /* halt on sigterm */
/* important signal handlers: pipe, child */
// sa.sa_handler=sig_pipe;
// sigaction(SIGPIPE,&sa,NULL); /* what todo when pipe/fifo closed */
// sa.sa_handler=sig_child;
// sigaction(SIGCHLD,&sa,NULL); /* what todo when child exited */
/* big TODO: */
/* some while/for loop to hang forever, remember, we are init! */
while(1) {
i=0;
/* read path */
do {
read(f_in,&buf,1);
// buf1[i] = buf; i++;
} while(buf != '\0');
//
// printf("Read path: %s\n",buf1);
i=0;
/* read status */
do {
read(f_in,&buf,1);
// buf2[i] = buf; i++;
} while(buf != '\0');
// status = atoi(buf2);
// printf("Read status: %d\n",status);
i=0;
/* read pid */
do {
read(f_in,&buf,1);
// buf3[i] = buf; i++;
} while(buf != '\0');
// pid = atoi(buf3);
}
return 0;
}

137
software/cinit/browse_source/cinit-0.0.4/old/cinit.c05
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/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux/cinit
*/
/* *stat() */
#include <sys/stat.h>
#include <unistd.h>
/* open */
#include <fcntl.h>
/* siggnal */
#include <signal.h>
/* PATH_MAX */
#include <limits.h>
/* printf() */
//#include <stdio.h>
/* str* */
#include <string.h>
#include "cinit.h"
/* global variable */
struct svcl svc_list;
/***********************************************************************
* the main procedure
*/
int main()
{
char buf[1223];
struct stat sbuf;
int i;
struct sigaction sa;
/* signal handlers to ignore */
sa.sa_handler=SIG_IGN;
// sigaction(SIGINT,&sa,NULL); /* ignore ctr+c */
sigaction(SIGSTOP,&sa,NULL); /* ignore ctr+z, stop */
sigaction(SIGPIPE,&sa,NULL); /* what todo when pipe/fifo closed */
D_PRINTF(CINIT_INIT);
/* begin to handle signals */
/* stat, checkdir */
if( stat(CINIT_INIT,&sbuf) ) {
cerr("PANIC ACTION: init dir missing", RT_PAR_FAIL);
} else if( ! S_ISDIR(sbuf.st_mode) ) {
cerr("PANIC ACTION: init is not a dir", RT_PAR_FAIL);
}
if( chdir(CINIT_INIT) == -1)
cerr("PANIC ACTION: chdir to /etc/cinit/init failed!",RT_PAR_FAIL);
/* get shared memory */
shmfd = shm_open(CINIT_SHM,O_RDWR|O_CREAT,0600);
if(shmfd == -1) {
perror("Shared memory");
cerr("shared memory",RT_PAR_FAIL);
}
/* count of started processes */
svc_list.process = 0;
/* open communication fifos */
f_in = open(CINIT_DIR SLASH F_IN, O_RDWR);
f_out = open(CINIT_DIR SLASH F_OUT, O_RDWR);
if(f_in == -1 || f_out == -1) cerr("opening fifo failed",RT_PAR_FAIL);
/* initial run, only if we are 'real' init' */
// if( getpid() == 1) {
i = run_init_svc();
printf("Initialer Start rueckgabe: %d\n", i);
// }
/* signal handlers to do special things with */
// something else sa.sa_handler=SIG_IGN;
sigaction(SIGUSR1,&sa,NULL); /* reboot on sigusr1 */
sigaction(SIGUSR1,&sa,NULL); /* power-off on sigusr2 */
sigaction(SIGTERM,&sa,NULL); /* halt on sigterm */
/* important signal handlers: pipe, child */
// sa.sa_handler=sig_pipe;
// sa.sa_handler=sig_child;
// sigaction(SIGCHLD,&sa,NULL); /* what todo when child exited */
/* big TODO: */
/* some while/for loop to hang forever, remember, we are init! */
while(1) {
i=0;
/* read path */
do {
read(f_in,&buf,1);
// buf1[i] = buf; i++;
} while(buf != '\0');
//
// printf("Read path: %s\n",buf1);
i=0;
/* read status */
do {
read(f_in,&buf,1);
// buf2[i] = buf; i++;
} while(buf != '\0');
// status = atoi(buf2);
// printf("Read status: %d\n",status);
i=0;
/* read pid */
do {
read(f_in,&buf,1);
// buf3[i] = buf; i++;
} while(buf != '\0');
// pid = atoi(buf3);
}
return 0;
}

158
software/cinit/browse_source/cinit-0.0.4/old/cinit.c06
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@ -1,158 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux/cinit
*/
/* *stat() */
#include <sys/stat.h>
#include <unistd.h>
/* open */
#include <fcntl.h>
/* siggnal */
#include <signal.h>
/* PATH_MAX */
#include <limits.h>
/* printf() */
//#include <stdio.h>
/* str* */
#include <string.h>
/* sockets */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include "cinit.h"
/* global variable */
struct svcl svc_list;
int sock;
/***********************************************************************
* sigio: client handling
*/
/* we are called, if one or _more_ connections are waiting */
void sigio(int signal)
{
struct ucred suck;
int len = sizeof(suck), lens;
int nsock;
struct sockaddr_un sun;
char buf;
lens=sizeof(sun);
memset(&sun,0,lens);
/* this is always us! */
// getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &suck, &len);
// printf("orig angreifer: pid: %d uid: %d gid: %d\n",suck.pid,suck.uid,suck.gid);
do {
//s_tmp[s_idx] = accept(sock,(struct sockaddr *) &sun, (socklen_t *) &lens);
nsock = accept(sock,(struct sockaddr *) NULL, (socklen_t *) NULL);
// nsock = accept(sock,(struct sockaddr *) &sun, (socklen_t *) &lens);
// if( s_tmp[s_idx] == -1) {
if( nsock == -1) {
if (errno != EAGAIN) {
perror("accept");
_exit(1);
} else {
break;
}
}
//getsockopt(s_tmp[s_idx], SOL_SOCKET, SO_PEERCRED, &suck, &len);
getsockopt(nsock, SOL_SOCKET, SO_PEERCRED, &suck, &len);
printf("angreifer: pid: %d uid: %d gid: %d\n",suck.pid,suck.uid,suck.gid);
read(nsock,&buf,1);
printf("command: %d\n",buf);
while ( (len = read(nsock,&buf,1)) ) {
// printf("laenge: %d\n",len);
if(len == -1) {
// if(errno != EINVAL && errno != EAGAIN) {
perror("read");
return;
// _exit(1);
// }
}
if(buf == 0) break;
write(1,&buf,1);
}
printf("Fertig mit lesen\n");
write(nsock,"ok\n",4);
printf("fertig mit schreiben\n");
} while ( 1 );
printf("keine sockets mehr da..., sigio beendet sich jetzt.\n");
}
/***********************************************************************
* the main procedure
*/
int main()
{
struct stat sbuf;
int i;
struct sigaction sa;
/* signal handlers to ignore */
sa.sa_handler=SIG_IGN;
// sigaction(SIGINT,&sa,NULL); /* ignore ctr+c */
sigaction(SIGSTOP,&sa,NULL); /* ignore ctr+z, stop */
sigaction(SIGPIPE,&sa,NULL); /* what todo when pipe/fifo closed */
sigaction(SIGCHLD,&sa,NULL); /* what todo when child exited */
sa.sa_handler=sigio;
sigaction(SIGIO,&sa,NULL); /* what todo when data arrived on socket */
D_PRINTF(CINIT_INIT);
/* stat, checkdir */
if( stat(CINIT_INIT,&sbuf) ) {
cerr("PANIC ACTION: init dir missing", RT_PAR_FAIL);
} else if( ! S_ISDIR(sbuf.st_mode) ) {
cerr("PANIC ACTION: init is not a dir", RT_PAR_FAIL);
}
if( chdir(CINIT_INIT) == -1)
cerr("PANIC ACTION: chdir to /etc/cinit/init failed!",RT_PAR_FAIL);
/* count of started processes */
svc_list.process = 0;
/* initial run, only if we are 'real' init' */
// if( getpid() == 1) {
i = run_init_svc();
printf("Initialer Start rueckgabe: %d\n", i);
// }
/* signal handlers to do special things with */
// something else sa.sa_handler=SIG_IGN;
// sigaction(SIGUSR1,&sa,NULL); /* reboot on sigusr1 */
// sigaction(SIGUSR1,&sa,NULL); /* power-off on sigusr2 */
// sigaction(SIGTERM,&sa,NULL); /* halt on sigterm */
/* the main loop */
while(1) ;
}

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software/cinit/browse_source/cinit-0.0.4/old/cinit.commands.v01
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--------------------------------------------------------------------------------
cinit commands, Nico Schottelius 2005-04-28
--------------------------------------------------------------------------------
cinit allows communication through a socket (see ipc.thoughs for reasons).
Sockets allow to find out the accessing uid, gid and pid (uses SO_PEERCRED as
socketoption).
The communication-protocol is binary.
--------------------------------------------------------------------------------
Protocol overview
--------------------------------------------------------------------------------
Any communication begins with a command. A command is a one byte
unsigned char. Depending on the command, the communication has its own
semantics.
Commands are: (values can be found in cinit.h)
CMD_START_SVC: I want to start a service.
CMD_CHG_STATUS: I want to change the status of a service.
CMD_STOP_SVC: Please shutdown a service and its dependencies.
CMD_KILL_SVC: Shutdown a service, don't care about its dependencies.
CMD_RESCUE: Kill everything, and spawn a sulogin shell.
CMD_INIT: Start all services (again possibly).
CMD_HALT: Halt the system.
CMD_REBOOT: Reboot the system.
CMD_POWEROFF: Power-off the system.
--------------------------------------------------------------------------------
Detailled command-listing
--------------------------------------------------------------------------------
CMD_START_SVC
1. int len; /* length of service name, including \0 */
2. char *svc; /* name of the service, absolute pathname */
cinit returns:
a) ok, a SID, a service ID: int svc_id; [ really need int? ]
b) fail, [currently only fail is returned]
a) already running
b) svc_name too long / not allowed
[ A service identification is used for faster searching in cinit.
It is also a hint for developers of external software, that they should not
be able to use CMD_CHG_STATUS, if they didn't start a service.
They should use CMD_STOP_SVC to stop a service.
Starting a service is currently done via exec() in the external program or
a cinit-fork(). ]
CMD_CHG_STATUS: I want to change the status of a service.
0. int svc_id; /* service ID to change */
1. char status; /* status:
once: started successfully the service once.
fail: tried to start once, but the service exit uncgrafully
UNUSED! respawn: I am on it, as soon it exists I'll restart! */
2. pid_t pid /* the pid of the service, if started once
or the pid of the service watcher, if respawning */
cinit returns: MSG_OK|MSG_FAIL (char)
CMD_STOP_SVC: Please shutdown a service and its dependencies.
1. int len; /* length of service name, including \0 */
2. char *svc; /* name of the service, absolute pathname */
cinit returns: ready...
CMD_KILL_SVC: Shutdown a service, don't care about its dependencies.
1. int len; /* length of service name, including \0 */
2. char *svc; /* name of the service, absolute pathname */
cinit returns: ready...
CMD_INIT: Start all services (again possibly).
cinit returns: ready...
CMD_RESCUE: Kill everything, and spawn a sulogin shell.
CMD_HALT: Halt the system.
CMD_REBOOT: Reboot the system.
CMD_POWEROFF: Power-off the system.

11
software/cinit/browse_source/cinit-0.0.4/old/cinit.create.cinit_dir
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#!/bin/sh
# Nico Schottelius
# cinit: create our initial directory
# 2005-05-24
# init variables
. $(dirname $0)/cinit.read-conf
BASEDIR=$DESTDIR/$CINIT_DIR
mkdir -p $BASEDIR

80
software/cinit/browse_source/cinit-0.0.4/old/cinit.h01
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@ -1,80 +0,0 @@
/*
* cinit
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* header of cinit
*/
/* includes */
#include <sys/types.h> /* pid_t */
/* limits */
#define MAX_SVC 1024 /* maximum services */
#define MAX_DEPS 32 /* maximum direct dependencies of a service */
/* paths */
#define CINIT_DIR "/etc/cinit"
#define F_IN "in"
#define F_OUT "out"
#define SLASH "/"
#define C_INIT "init"
#define C_SHD "shutdown"
#define C_REBOOT "reboot"
#define C_NEEDS "./needs"
#define C_WANTS "./wants"
#define C_RUN "./run"
#define C_RESPAWN "respawn"
#define C_PARAMS "params"
/* return values */
#define RT_FAIL 0
#define RT_OK 1
#define RT_CHLD_FAIL 1 /* child failed */
#define RT_CHLD_OK 2 /* child succeded */
#define RT_PAR_FAIL 3 /* parent failed */
#define RT_PAR_OK 4 /* parent succeded */
/* status of a service-starter (run_run_svc) */
#define RT_ONE_FAILED 5 /* one ore more failed */
#define RT_ALL_STARTED 6 /* everything ok */
#define RT_DEPS_MAX 7 /* too many dependencies */
/* status of a service */
#define ST_NO 0 /* process not existing */
#define ST_TMP 1 /* currently working on it */
#define ST_ONCE 2 /* executed once */
#define ST_RESPAWN 3 /* running and respawning */
#define ST_FAIL 4 /* failed to start service */
/* variables */
/* array of svc */
/* linked list of services */
/* balanced trees */
struct svc {
char *abs_path; /* service identifier */
int status; /* tmp, respawn, ran once */
pid_t pid; /* pid of the process */
};
struct svcl {
struct svc svca[MAX_SVC];
int process;
};
extern struct svcl svc_list;
/* functions */
void cerr(char *string, int status);
int chk_svc(char *svc);
int run_svc(char *rpath);
int add_mod_svc(char *svc, int status);
int run_run_svcs(char *rpath);

42
software/cinit/browse_source/cinit-0.0.4/old/cnt_digits.c
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/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux/cinit
*/
/* this code is stolen from gpm */
/* what's the english name for potenz ? */
int x_high_y(int base, int pot_y)
{
int val = 1;
if(pot_y == 0) val = 1;
else if(pot_y < 0) val = 0; /* ugly hack ;) */
else while(pot_y > 0) {
val = val * base;
pot_y--;
}
return val;
}
/* return characters needed to display int */
int cnt_digits(int number)
{
/* 0-9 = 1 10^0 <-> (10^1)-1
* 10 - 99 = 2 10^1 <-> (10^2)-1
* 100 - 999 = 3 10^2 <-> (10^3)-1
* 1000 - 9999 = 4 ... */
int ret = 0, num = 0;
/* non negative, please */
if(number < 0) number *= -1;
else if(number == 0) ret = 1;
else while(number > num) {
ret++;
num = (x_high_y(10,ret) - 1);
}
return(ret);
}

65
software/cinit/browse_source/cinit-0.0.4/old/do_change_status.c01
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/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* change status of a service
* part of cinit
*/
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "cinit.h"
/* one handler for read and write! */
int do_change_status(char *svc, char *status, pid_t *pid, int sock2, int action)
{
char buf = CMD_CHG_STATUS;
int tmp;
ssize_t (*fpoint)(int,void* ,size_t);
D_PRINTF("VERSUCHE STATUS ZU AENDERN");
printf("socket: %d (cmd=%d)\n",sock2, buf);
if(action == ACT_READ) {
D_PRINTF("Leeeese");
fpoint = read;
} else {
D_PRINTF("schreibe");
fpoint = write; /* don't care about warnings! */
}
if(action == ACT_WRITE) {
D_PRINTF("schreibe kommando");
if(fpoint(sock2,&buf,1) == -1) { /* COMMAND */
perror("command i/o");
return 0;
}
tmp = strlen(svc);
sock2 = connect_sock(sock2);
}
if(fpoint(sock2,&tmp,sizeof(tmp)) == -1) { /* length */
perror("i/o: length");
return 0;
}
if(fpoint(sock2,svc,tmp) == -1) { /* write service name */
perror("i/o: service name");
return 0;
}
if(fpoint(sock2,status,sizeof(*status)) == -1) { /* status */
perror("i/o: status");
printf("Status: %d, *status=%d, sizeof=%d\n",status,*status,sizeof(*status));
return 0;
}
if(fpoint(sock2,pid,sizeof(*pid)) == -1) { /* PID */
perror("i/o: PID");
return 0;
}
D_PRINTF("fertig mit statuswechsel lesen");
return 1;
}

121
software/cinit/browse_source/cinit-0.0.4/old/idea01
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@ -1,121 +0,0 @@
--------------------------------------------------------------------------------
/etc/cinit
-> init/
-> shutdown/
-> reboot/
<service>
needs/ -> we wait until all parallel processes are finished _and_ we
don't start if one fails
wants/ -> we start all of them parallel and wait for them?
hold/
wait -> wait until process finished
run -> program to execute
params -> \n seperated argument list
respawn -> respawn it
services may only be under /etc/cinit?
--------------------------------------------------------------------------------
Service-Status:
- abs_path
- status (respawn,tmp,once)
--------------------------------------------------------------------------------
starting services:
run_svc("/etc/cinit/service/")
-> exec run $params
Later:
-> check if service already running -> return OK
-> check needs/ -> check wants/
-> run_svc($cur)
When run_svc returns, the service is started and all service it needs, too.
--------------------------------------------------------------------------------
-> check needs/
-> exists -> fork( run_run_svcs() ) and continue
(fork) -> fork() run_svc(needs/*);
-> check wants/
-> exists -> run_svc(wants/*);
-> waitfor(need_run_svc)
--------------------------------------------------------------------------------
run_run_svcs()
-> start parallel (forked) run_svc() for every service
--------------------------------------------------------------------------------
main()
- run_svc /etc/cinit/init/
- sleep()? -> simply do nothing -> do we need to fork ourselves? No, we are init.
spaeter:
- open /dev/console W_ONLY
- make stdin == /etc/cinit/in
- make stdout, stderr /dev/console
--------------------------------------------------------------------------------
eof
Things, which are clear
- we need to fork before execl(), as excel() replaces us.
- chdir() _after_ fork()
profiles support: profile=$profile
start
"service.$profile" if exists, instead of
"service"
starting services:
cinit:
pipe()
set_status_tmp()
fork() --> failure --> clear_service
cinit_process_watcher():
fork()
execve(process,args,env)
waitpid() -> for once? PROCESS MUST RETURN!
write_pipe()
rmpipe()
--------------------------------------------------------------------------------
What to send over to cinit and read back?
- first you need two pipes for every process: read+write (on both sides)
- cinit wants
o command
- service temporary - trying to start in right now.
- service executed once - fine
- service executed once and that failed - :-(
- service respawing
o an identifier for the service (i from service list ;-)
--> makes 2 bytes to read
--------------------------------------------------------------------------------
How cinit works:
cinit says: I want to start service xyz. (/etc/cinit/init on bootup)
cinit calls run_svc().
--------------------------------------------------------------------------------
run_svc(char *relative_path):
- check if service is alr
- fork()
- write cinit: check service, I want to start it
-> returns status of service (see ST_* in cinit.h)
- cinit returns: ok, you are temporary
- [that checked] check if service
o is already started
o is beeing started
x check if rpath S_ISDIR
x chdir(dir)
- check needs - check wants
- for every needs/* start run_svc
- check respawn -> respawn = true
- check run

200
software/cinit/browse_source/cinit-0.0.4/old/idea02
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@ -1,200 +0,0 @@
--------------------------------------------------------------------------------
/etc/cinit
-> init/
-> shutdown/
-> reboot/
<service>
needs/ -> we wait until all parallel processes are finished _and_ we
don't start if one fails
wants/ -> we start all of them parallel and wait for them?
hold/
wait -> wait until process finished
run -> program to execute
params -> \n seperated argument list
respawn -> respawn it
services may only be under /etc/cinit?
--------------------------------------------------------------------------------
Service-Status: (see struct svc, cinit.h)
- abs_path
- status (respawn,tmp,once)
- pid
abs_path\0status\0pid\0
--------------------------------------------------------------------------------
starting services:
run_svc("/etc/cinit/service/")
-> exec run $params
Later:
-> check if service already running -> return OK
-> check needs/ -> check wants/
-> run_svc($cur)
When run_svc returns, the service is started and all service it needs, too.
--------------------------------------------------------------------------------
-> check needs/
-> exists -> fork( run_run_svcs() ) and continue
(fork) -> fork() run_svc(needs/*);
-> check wants/
-> exists -> run_svc(wants/*);
-> waitfor(need_run_svc)
--------------------------------------------------------------------------------
run_run_svcs()
-> start parallel (forked) run_svc() for every service
--------------------------------------------------------------------------------
main()
- run_svc /etc/cinit/init/
- sleep()? -> simply do nothing -> do we need to fork ourselves? No, we are init.
spaeter:
- open /dev/console W_ONLY
- make stdin == /etc/cinit/in
- make stdout, stderr /dev/console
--------------------------------------------------------------------------------
eof
Things, which are clear
- we need to fork before execl(), as excel() replaces us.
- chdir() _after_ fork()
profiles support: profile=$profile
start
"service.$profile" if exists, instead of
"service"
starting services:
cinit:
pipe()
set_status_tmp()
fork() --> failure --> clear_service
cinit_process_watcher():
fork()
execve(process,args,env)
waitpid() -> for once? PROCESS MUST RETURN!
write_pipe()
rmpipe()
--------------------------------------------------------------------------------
What to send over to cinit and read back?
- first you need two pipes for every process: read+write (on both sides)
- cinit wants
o command
- service temporary - trying to start in right now.
- service executed once - fine
- service executed once and that failed - :-(
- service respawing
o an identifier for the service (i from service list ;-)
--> makes 2 bytes to read
--------------------------------------------------------------------------------
How cinit works:
cinit says: I want to start service xyz. (/etc/cinit/init on bootup)
cinit calls run_svc().
--------------------------------------------------------------------------------
int run_svc(char *relative_path):
- check if service is already running or temporary (task list!)
-> yes: return RT_PAR_OK
-> no: continue.
- set service to be temporary (ST_TMP) and retrieve SID (service ID)
- walk through dependency tree and call run_svc
- fork() -> so cinit can continue.
- write cinit: check service, I want to start it
-> returns status of service (see ST_* in cinit.h)
- cinit returns: ok, you are temporary
- [that checked] check if service
o is already started
o is beeing started
x check if rpath S_ISDIR
x chdir(dir)
- check needs - check wants
- for every needs/* start run_svc
- check respawn -> respawn = true
- check run
--------------------------------------------------------------------------------
add_mod_svc(char *svc, int status)
-> add or modify status of a service
- check whether service exists, reset status
- if not exists, insert if maximum of services is not reached
--------------------------------------------------------------------------------
cinit communications proto
--------------------------------------------------------------------------------
cinit:
-> signal_handler on SIGCHLD
run_init()
-> run_svc(init)
-> fork() -> do the work
signal_handler_child
waitpid(.*)
-> returns pid
oder waitpid() in dem run_svc, wenn need/once?
need:
for i in need/*; do
( $service & );
done
wait(.*);
--------------------------------------------------------------------------------
cinit:
run_svc:
checks what it needs (need/*)
need/*
fork()
fork(), fork()
--------------------------------------------------------------------------------
Kommunikationsproblem:
-> 1024 ist maximale anzahl offener sockets -> 510 von fifos,pipes
- mehrere FIFOs?
--> kommunikation gesichert, extrem viele fifos...
--> etwas unsauber, aber geregelte kommunikation
- mehrere PIPEs?
--> viele PIPEs (HRHR)
--> programme koennen nur von cinit gefork()ed werden.
--> eine datei mit prozessen?
--> einen RAM Bereich?
--------------------------------------------------------------------------------
cinit[1] <-> fifo <-> forker
forker?
--------------------------------------------------------------------------------
pfad vorher aufloesen?
--------------------------------------------------------------------------------
Kommunikation: ::Test::
Test mit nur 2 FIFOs!
--------------------------------------------------------------------------------
sig_fifo()
read(..) als hauptaufgabe?

49
software/cinit/browse_source/cinit-0.0.4/old/msg_change_status.c01
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@ -1,49 +0,0 @@
/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* change status of a service
* part of cinit
*/
#include <string.h>
#include <unistd.h>
#include "cinit.h"
int do_change_status(char *svc, char status, pid_t pid, int action)
{
char buf = CMD_CHG_STATUS;
int tmp = strlen(svc);
ssize_t (*fpoint)(int,void* ,size_t);
if(action == ACT_READ)
fpoint = read;
else
fpoint = write;
D_PRINTF("versuche status zu aendern");
if(write(sock,&buf,1) == -1) { /* write COMMAND */
perror("write");
return 0;
}
if(write(sock,&tmp,sizeof(tmp)) == -1) { /* write length */
perror("write");
return 0;
}
if(write(sock,svc,tmp) == -1) { /* write service name */
perror("write");
return 0;
}
if(write(sock,&buf,1) == -1) { /* write PID */
perror("write");
return 0;
}
write(sock,&status,sizeof(status)); /* write status */
D_PRINTF("fertig mit schreiben");
read(sock,&buf,sizeof(buf)); /* read SID or -1 if error */
return buf;
}

23
software/cinit/browse_source/cinit-0.0.4/old/msg_start_svc.c
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@ -1,23 +0,0 @@
/*
* cinit
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* tell cinit we start a service
*/
#include <unistd.h>
/* return status */
int msg_start_svc(char *string, int respawn)
{
char *p;
p = string;
while ( *p != '\0') {
write(2,p,1);
p++;
}
/* FIXME: return if in cinit, _exit on fork() */
// if(...)
_exit(status);
}

100
software/cinit/browse_source/cinit-0.0.4/old/read_file.c
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/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* run_svc
* part of cinit
*/
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
#include "cinit.h"
/***********************************************************************
* read_file: return file content, each line a char*
*/
char **read_file(char *file)
{
int tmp;
int fd, argc;
char buf[BUFSIZE];
char *p, *sbuf = NULL;
char **nargv = NULL;
struct stat stbuf;
D_PRINTF("Lese Datei");
D_PRINTF(file);
if( !stat(file,&stbuf) ) {
fd = open(file,O_RDONLY);
if(fd == -1) {
LOG("params exists, but open params failed");
return NULL;
}
D_PRINTF("open ist ok");
argc = 0;
/* most likely one round */
while ( (tmp = read(fd,buf,BUFSIZE) ) != 0 ) {
if(tmp == -1) {
perror("read");
return NULL;
}
sbuf = realloc(sbuf,argc + tmp + 1);
strncpy(&sbuf[argc],buf,tmp);
argc += tmp;
}
close(fd);
}
sbuf[argc] = '\0';
/************** build string **************/
/* The idea is to reuse the allocated memory. We'll simply
* replace the \n with \0 and set a char* to it.
* We'll lose the last byte (the initial \0), but we
* don't care, as we die some seconds later with execv() */
argc = 0;
while( (p = strchr(sbuf,'\n')) ) {
nargv = realloc(nargv, sizeof(char *) * (argc + 1));
if(nargv == NULL) {
LOG("realloc failed");
return NULL;
}
nargv[argc] = sbuf;
*p = '\0';
sbuf = p+1; /* is ok, as behind the last \n is a \0 */
argc++;
}
/************ close argv list **************/
nargv = realloc(nargv, sizeof(char *) * (argc + 1));
if(nargv == NULL) {
LOG("realloc failed");
return NULL;
}
nargv[argc] = NULL; /* terminate argv list */
return nargv;
}

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